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?

Printable View

- November 15th 2005, 12:33 PMCrystalsiclesHelp 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 PMMathGuru
sin^2 x + cos^2 x = 1

now subtract sin^2 x from both sides

cos^2 x = 1 - sin^2 x - November 15th 2005, 01:48 PMCrystalsicles
Wow I feel dumb. Thanks so much for ur help though.