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Create a vector `sin_wave` by...

Create a vector `sin_wave` by calling the `sin()` function on each element

# in `x_range`.# Create a vector `cos_wave` by calling the `cos()` function on each element

# in `x_range`.

# in `x_range`.# Create a vector `cos_wave` by calling the `cos()` function on each element

# in `x_range`.

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