
Joseph W. answered 01/13/16
Tutor
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Dual Degreed Electrical Engineering and Math Tutor
First, rewrite cot(x) in terms of sin(x) and cos(x). You should notice that something has canceled and you're left with a very basic trigonometric function.
This function should be related to sec(x) pretty simply. Remember, sec(x) is defined as 1/cos(x).
If you have any further questions or need clarification, please let me know.