# 2tanx(1-sin^2x) the answer is sin2x but im not sure how to get there?

• 2tanx(1-sin^2x) the answer is sin2x but im not sure how to get there?

If f(x)= sin^4x ... 2tanx Question that I have answered but not sure if it's really the right answer: ... 2tanx So, I'll just get the derivative ...
Positive: 25 %
How to prove the identity sin^2x + cos^2x = 1 ?, Topics ... This is not a proof, but it sure is ... you will get an answer of 1. 1 = sin^2 x ...
Positive: 22 %

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... ^2=\sin^2x+\sinh^2y$? Im not sure how to ... You can take it from there. By the way, to get the sine addition formula and the ... Not the answer you're ... Read more Positive: 25 % get answers with explanations ... ^2 = tan^2x + 2tanx + 1 = sin^2x + 2sinx + 1 ----- ----- cos^2x cos x = sin^2x + 2sinxcosx + cos^2x ... If so I'm not ... Read more Positive: 20 % However I am not sure how to make this ... the Pythagorean identity$\cos^2x+\sin^2x=1$gives us$\cos^2x=1-\sin^2x\$, ... Not the answer you're looking ...