Just gonna use " / " for divided by: Express sin2A / 1 - cos 2A in terms of tanA only. Express cos 2A - cos(squared)A / 1 + cos2A any help at all would be much appreciated !! = )
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Hi, You might find the following identities useful: sin(2x)=2sin(x)cos(x) cos(2x)=cos^2(x)-sin^2(x) And, of course, tan(x)=sin(x)/cos(x). If you use these identities you should be on your way...
use,
Last edited by Shyam; October 20th 2008 at 11:46 AM.
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