Prove this identity:(adsbygoogle = window.adsbygoogle || []).push({});

sin (2 X)

----------------- = 2 sin (X) - 2 sin^2 (X)

sec (X) + tan (X)

How would you do it? It was suggested in another thread that this can't be proved or that there is an error in the problem...but I think it is a hard problem to figure out. Anyeays, the teacher said that it was provable...so I'm really not sure. Seems to be stumping most of us today though. Good luck!!

I'll check back to see who the winner is

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# Homework Help: This is a difficult problem- Identities

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