anonymous
  • anonymous
(cos Θ − cos Θ)^2 + (cos Θ + cos Θ)^2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
i am pretty sure it is sin^2
anonymous
  • anonymous
bu ti just need another opinion
anonymous
  • anonymous
?

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LynFran
  • LynFran
(cos theta - cos theta)^2= 0^2 (cos theta + cos theta )^2 = (2cos theta)^2
anonymous
  • anonymous
no, you just put that one..... and i said "?"
Mertsj
  • Mertsj
\[(\cos \theta+\cos \theta)^2=\cos ^2\theta+2\cos ^2\theta+\cos ^2\theta=4\cos ^2 \theta\]
anonymous
  • anonymous
so what type of cos equations would equal sin?
anonymous
  • anonymous
and he is gone... ignore that last question...
anonymous
  • anonymous
wish i i knew how to give medals...
LynFran
  • LynFran
yes (2cos theta)^2 = 4 cos ^2 theta
LynFran
  • LynFran
we have the Pythagorean identity cos^2 + sin ^2 =1 where cos^2 theta =1- sin^ theta

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