I have no idea how to work this problem using addition or subtraction theories (Worried)

(x-n) = -sin x

Thanks!

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- May 7th 2010, 05:10 PMpmacpaddition or subtraction for cofunction identity
I have no idea how to work this problem using addition or subtraction theories (Worried)

**(x-n) = -sin x**

Thanks! - May 7th 2010, 06:05 PMdwsmith
- May 7th 2010, 06:18 PMpmacp
Prove the confunction identity sin (x - π) = -sin x using the addition or subtraction formulas.

- May 7th 2010, 06:21 PMdwsmith
- May 7th 2010, 06:25 PMpmacp
thank you!