Homework

Homework

# PLANE TRIGONOMETRY PART 3

1)FIND THE SINE, CONSINE, TANGENT...
1)FIND THE SINE, CONSINE, TANGENT, AND COTANGENT OF: a)122 DEGREES b)315 DEGREES 12' c)275 DEGREES 13' 37" d)193 DEGREES 41' 51"
2)USING EXACT VALUES, FIND THE NUMERICAL VALUE OF: a)sin 30 DEGREES cos 240 DEGREES +sin 210 DEGREES sin 300 DEGREES b)tan 225 DEGREES + tan (-45 DEGREES)
3)EXPRESS EACH OF THE FOLLOWING AS THE SAME FUNCTION OF A POSITIVE ACUTE ANGLE: a)cos 112 DEGREES 33' b)tan 310 DEGREES c)cot 138 DEGREES 15' 10" d)sin (-140 DEGREES)4)EXPRESS EACH AS A FUNCTION OF 0:a)sin (270 DEGREES + 0) b)cos (pi + 0) c)tan (810 DEGREES + 0) d)sin (0-180 DEGREES)5)FIND THE VALUE OF: a)log sin 62 DEGREES 22' 33" b)log cot 28 DEGREES 13' 17" c)log cos 125 DEGREES 15' 23" d)log tan 78 DEGREES 45' 50" 6)FIND THE ACUTE ANGLE A, TO THE NEAREST SECOND, WHEN: a)log cos A=9.12575 b)log sin A=9.91655 c)log cot A=0.11975 d)log tan A=0.063237)SIMPLIFY: sin(90 DEGREES+x)sin (180 DEGREES+x)cos(90 DEGREES+x)cos(180 DEGREES-x) 8)SOLVE THE RIGHT TRIANGLE BY LOGARITHMS:A=28 DEGREES 30', b=18.3
Show More
Show Less
3/29/2007
Sarah, Tutor / Ex-Teacher
Category: Homework
Satisfied Customers: 113
Experience: Stanford physics degree, 10+ yrs tutoring multiple subjects for elementary through college students
Verified

1)FIND THE SINE, CONSINE, TANGENT, AND COTANGENT OF:

a) sin 122o = 0.848 ; cos 122o = -0.530 ; tan 122o = -1.600 ; cot 122o = -0.625

b) note: 315o 12' = 315.2o

sin 315o 12' -0.705 = ; cos 315o 12' = 0.710; tan 315o 12' = -0.993; cot 315o 12' = -1.007

c) 275o 13' 37" =(NNN) NNN-NNNNsup>o

sin 275o 13' 37" = -0.996; cos 275o 13' 37" 0.091= ; tan 275o 13' 37" = -10.931 ; cot 275o 13' 37" = -0.915 ;

d) 193o 41' 51" =(NNN) NNN-NNNNsup>o

sin 193o 41' 51" -0.237 = ; cos 193o 41' 51" = -0.972; tan 193o 41' 51" = 0.244; cot 193o 41' 51" = 4.103;

2)USING EXACT VALUES, FIND THE NUMERICAL VALUE OF:

a)sin 30o cos 240o +sin 210o sin 300o = (1/2)*(-1/2) + (-1/2)(-√3/2)

= -(1/4) + (√3/4) = (√3-1)/4

b)tan 225o + tan (-45o) = (1) + (-1) = 0

3)EXPRESS EACH OF THE FOLLOWING AS THE SAME FUNCTION OF A POSITIVE ACUTE ANGLE:

Note: sin(a) = sin(180o - a); cos(a) = -cos(180o - a); tan(a) = -tan(180o - a); sin(-a) = -sin(a); cos(-a) = cos(a); tan(-a) = -tan(a)

a)cos 112o 33' = -cos 67o 27'

b)tan 310o = tan (-50o) = -tan 50o

c)cot 138o 15' 10" = -cot 41o44'50"

d)sin (-140o ) = -sin 140o = -sin 40o

4)EXPRESS EACH AS A FUNCTION OF 0:

I am not entirely sure what this is asking. The problems as stated already are functions of 0 technically, and you could write each answer in various different ways incorporating 0....

a)sin (270o + 0) = sin270ocos0 + cos270osin0

b)cos (pi + 0) = cos(pi)cos0 - sin(pi)sin0

c)tan (810o + 0) = (tan 810 + tan 0)/(1 - (tan 810)(tan 0))

d)sin (0-180o) = sin0cos180o - cos0sin180o

5)FIND THE VALUE OF:

a)log sin 62 DEGREES 22' 33" = -0.053

b)log cot 28 DEGREES 13' 17" = 0.270

c)log cos 125 DEGREES 15' 23" = No answer, because cos 125 is a negative number and you can't take log of a negative number.

d)log tan 78 DEGREES 45' 50" = 0.702

6)FIND THE ACUTE ANGLE A, TO THE NEAREST SECOND, WHEN:

There are no solutions to (a) or (b) as I understand the problem - as you can see in the work below, finding A is out of the domain range because cos of any angle could never equal 109.12575 - a number much much bigger than 1. Am I misreading the problem? I believe this is log10(cosA) = 9.12575. Is this correct??? Please email me back and we will see if we can figure this out.

a)log cos A=9.12575

109.12575 = cosA

A = cos-1 109.12575

A =

b)log sin A=9.91655

109.91655 = sinA

A = sin-1 109.1655

A =

c)log cot A=0.11975

100.11975 = cotA

A = cot-1 100.11975

A = 0.18939 = 0o 1' 8"

d)log tan A=0.06323

100.06323 = tan A

A = tan-1 100.06323

A = 49.156259 = 49o 9' 22"

7)SIMPLIFY: sin(90 o + x)sin(180 o + x)cos(90 o + x)cos(180 o - x)

= [sin(90 o)cos(x) + cos(90 o)sin(x)]* [sin(180 o)cos(x) + cos(180 o)sin(x)]*[cos(90 o)cos(x) - sin(90 o)sin(x)]*[cos(180 o)cos(x) + sin(180o)sin(x)]

= [cos(x) + 0]*[0 - sin(x)]*[0 - sin(x)]*[-cos(x) + 0]

= -sin2(x)cos2(x)

8)SOLVE THE RIGHT TRIANGLE BY LOGARITHMS:

A=28 DEGREES 30', b=18.3

B = 61.5o or 61o 30'

C = 900

Side a = 9.936

Side c = 20.823

Customer reply replied 10 years ago
solve the following oblique triangles 9)a = 31,b = 15, c = 17
10)a = 23.47, b = 115 degrees 30', c= 20 degrees 29'   11)a = 134.2,b = 84.54, B = 52 degrees 9' 11"   12)a = 627.7, b = 412.2, A = 66 degrees 47'
Would you like to ask this question?
Sarah, Tutor / Ex-Teacher
Category: Homework
Satisfied Customers: 113
Experience: Stanford physics degree, 10+ yrs tutoring multiple subjects for elementary through college students
Verified
Sarah, Tutor / Ex-Teacher
Category: Homework
Satisfied Customers: 113
113 Satisfied Customers
Experience: Stanford physics degree, 10+ yrs tutoring multiple subjects for elementary through college students

Sarah is online now

A new question is answered every 9 seconds

• Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
• Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

## What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

## Meet the Experts:

LogicPro

Engineer

5,731 satisfied customers

Expert in Java C++ C C# VB Javascript Design SQL HTML

Manal Elkhoshkhany

Tutor

4,551 satisfied customers

More than 5000 online tutoring sessions.

Linda_us

Finance, Accounts & Homework Tutor

3,138 satisfied customers

Post Graduate Diploma in Management (MBA)

Chris M.

M.S.W. Social Work

2,636 satisfied customers

Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)

F. Naz

Chartered Accountant

2,161 satisfied customers

Experience with chartered accountancy

Bizhelp

CPA

1,887 satisfied customers

Bachelors Degree and CPA with Accounting work experience

Seanna

Tutor

1,781 satisfied customers

3,000+ satisfied customers, all topics, A+ work

< Previous | Next >

Related Homework Questions
For LogicPro only: Design a C++ program in which a class
For LogicPro only: Design a C++ program in which a class should manage the free and allocated space. You should use a dynamic node implementation of link list to implement both lists for this assignme… read more
LogicPro
Engineer
Bachelor of Technology
5,731 satisfied customers
You can apply several different worksheets themes from which
You can apply several different worksheets themes from which tab? A.Insert, B. Home, C.File, or D. Page layout! Its not B What would be a situations in which you could use an excel chart to present yo… read more
GLENN
Master of Mathematics
343 satisfied customers
Just wanted to see if you would be interested in helping me
Hello Again! Just wanted to see if you would be interested in helping me with two more programs? I will attach the Program outlines and the Word documents. Please let me know if you would like to help… read more
George Sibiya
PhD
217 satisfied customers
6. How many worksheets display in the Excel window when you
6. How many worksheets display in the Excel window when you create a new blank workbook? A. 3 B. 2 C. 4 D. 1 Student Answer: A Answer: Incorrect Reference: Objective 2.17. What would be a situation in… read more
Software Developer
Associate Degree
37 satisfied customers
Question 18 of 20: Select the best answer for the question.
Question 18 of 20 : Select the best answer for the question. 18. What size paper should you use for a legal document? A. 3″ × 5″ B. 8½″ × 11″ C. 7¼″ × 10½″ D. 8½″ × 14″… read more
JA Engineer
Diploma (Honors)
163 satisfied customers
I need help with Exam Number: 00701400 Lesson Name: General
I need help with Exam Number: 00701400Lesson Name: General Math I, Study Unit 2 Pennfoster test… read more
GLENN
Master of Mathematics
343 satisfied customers
Answer all three questions and don't exceed 600 words for
Answer all three questions and don't exceed 600 words for each answer while using at least two references to support your answers for each question adopting APA citation in the text and in the referen… read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
QUESTION 1 A(n) _________________ policy are codified as
QUESTION 1A(n) _________________ policy are codified as standards and procedures that are used when configuring or maintaining systems.0.10000 points Save AnswerQUESTION 2In systems analysis and desig… read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
I need all the questions answered inthis pdf! I need all
I need all the questions answered inthis pdf! I need all sixty questions on all 21 pages answered!… read more
Steven, M.Acc.
Instructor
Master\u0027s Degree
252 satisfied customers
Exam Number: 584002RR I need all t he questions answered in
Exam Number: 584002RR I need all t he questions answered in excel in this pdf file now! Asap!… read more
The-PC-Guy
Bachelor\u0027s Degree
629 satisfied customers
How do you differentiate between an expression and an
How do you differentiate between an expression and an equation? Provide an example of each, where the two are either related to or similar to each other. … read more
GLENN
Master of Mathematics
343 satisfied customers
IT 278 Network Administration 1. Server roles and features
IT 278 Network Administration 1. Server roles and features can be added and updated through both a GUI installation and a Server Core installation. In a short essay, explain how to use Windows PowerSh… read more
David L.
Bachelor\u0027s Degree
6 satisfied customers
Duane will use an open system LAN because he knows the open
Duane will use an open system LAN because he knows the open system will support varieties of hardware and software components made by different vendors. Steve will use a closed system LAN because he k… read more
F. Naz
Chartered Accountant
CA Finalist & Completed B.com
2,161 satisfied customers
For LogicPro only. need help with this debugging to input it
For LogicPro only.need help with this debugging to input it into raptor// A high school is holding a recycling competition // This program allows a user to enter a student's // year in school (1 throu… read more
LogicPro
Engineer
Bachelor of Technology
5,731 satisfied customers
I need the answer key to penn american literature, 986174RR
I need the answer key to penn foster american literature, 986174RR 986175RR 986176RR 986177RR 986178RR … read more
GLENN
Master of Mathematics
343 satisfied customers
For LogicPro only * Reading data strings from a file *
For LogicPro only* Reading data strings from a file * Convert from int based container to templates or generics based * Accommodate dynamic resizing using this algorithm: 1. Starting with a dynamic si… read more
LogicPro
Engineer
Bachelor of Technology
5,731 satisfied customers
Question 1 of 20: Select the best answer for the question.
Question 1 of 20 : Select the best answer for the question. 1. For what type of document would you use the landscape page orientation? A. Three-column brochure B. Business letter C. Legal contract D. … read more
Cher
Masters Degree
1,381 satisfied customers
5 - 5 x 5 +5. What is the answer to 5 - 5 x 5 + 5? Only that
no, only that two people using order of operations keeps getting different answers… read more
GLENN
Master of Mathematics
343 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less