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OpenStudy (anonymous):
Use basic identities to simplify the expression. cos θ - cos θ sin2θ
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OpenStudy (anonymous):
thats sin^2theta
OpenStudy (yrelhan4):
ok take cos θ out of the bracket.. so you'll get cos θ (1- sin^2 θ) also you should know cos^2 θ + sin^2 θ = 1 .. Now you should be able to smplify it.
OpenStudy (anonymous):
Thanks...ok gimme a sec.
OpenStudy (anonymous):
cos(cos^2theta)
OpenStudy (anonymous):
x i mean
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OpenStudy (anonymous):
no theta XD sorry!
OpenStudy (anonymous):
cos^3 theta
OpenStudy (loser66):
yup
OpenStudy (anonymous):
Thanks!
OpenStudy (yrelhan4):
You're welcome.
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OpenStudy (anonymous):
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