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Ryan, Engineer
Category: Pre-Calculus
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Experience:  B.S. in Civil Engineering
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How to prove sin6x/sin2x - cos6x/cos2x = 2?

Customer Question

how to prove sin6x/sin2x - cos6x/cos2x = 2 ?
Submitted: 1 year ago.
Category: Pre-Calculus
Expert:  Ryan replied 1 year ago.


Thank you for using the site.

Just to confirm the notation here, is this intended to be the difference of two fractions? That is, sin6x/sin2x is on fraction, and cos6x/cos2x is a separate fraction, correct?



Expert:  Ryan replied 1 year ago.

Hi again,

Here is the solution:


Please feel free to ask if you have any questions about this solution.



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