sin^2 x + cos^2 x = 1

now subtract sin^2 x from both sides

cos^2 x = 1 - sin^2 x

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- November 15th 2005, 12:33 PM #1

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## Help Please!!!!

Figured it out nevermind!!! I have another question though.

Cos^2 x=

I put 1-sin(x) and of course it was marked wrong. I was given advice to refer to the Identity of sin^2 x + cos^2 x=1. How can I apply that or is that the answer itself?

- November 15th 2005, 01:35 PM #2

- November 15th 2005, 01:48 PM #3

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