Tuesday
March 31, 2015

Homework Help: Trigonometry - Proofs

Posted by Sam on Tuesday, November 12, 2013 at 6:54pm.

Prove that the average of the numbers n sin (n degrees) (n = 2, 4, 6, ... 180) is cot (1 degree)
Hint: Express everything in terms of sin and cos. Can you rearrange the result into a form that allows you to use some of the identities you've learned?

How to start? I know I have to use trigonometric identities but where?
Thanks a lot.

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