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anonymous
 one year ago
(cos Θ − cos Θ)^2 + (cos Θ + cos Θ)^2
anonymous
 one year ago
(cos Θ − cos Θ)^2 + (cos Θ + cos Θ)^2

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i am pretty sure it is sin^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0bu ti just need another opinion

LynFran
 one year ago
Best ResponseYou've already chosen the best response.0(cos theta  cos theta)^2= 0^2 (cos theta + cos theta )^2 = (2cos theta)^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no, you just put that one..... and i said "?"

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.0\[(\cos \theta+\cos \theta)^2=\cos ^2\theta+2\cos ^2\theta+\cos ^2\theta=4\cos ^2 \theta\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so what type of cos equations would equal sin?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and he is gone... ignore that last question...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wish i i knew how to give medals...

LynFran
 one year ago
Best ResponseYou've already chosen the best response.0yes (2cos theta)^2 = 4 cos ^2 theta

LynFran
 one year ago
Best ResponseYou've already chosen the best response.0we have the Pythagorean identity cos^2 + sin ^2 =1 where cos^2 theta =1 sin^ theta
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