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- Sep 3rd 2010, 04:33 AMaeroflixproving trigonometry
- Sep 3rd 2010, 04:42 AMAckbeet
What ideas have you had so far?

- Sep 3rd 2010, 04:48 AMaeroflix
ive tried distributing the left side of equation ad added the right side of equation... but it gets too farther.. any help?

- Sep 3rd 2010, 04:51 AMAckbeet
On an identity of this sort, I would probably start by getting everything in terms of sin and cos. Where does that lead?

- Sep 3rd 2010, 04:52 AMmr fantastic