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OpenStudy (anonymous):
Use basic identities to simplify the expression. cos θ - cos θ sin2θ a. sec2θ b. sin θ c. tan2θ d. cos3θ
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OpenStudy (konradzuse):
do you know the identities?
OpenStudy (anonymous):
no what are the basic identities
OpenStudy (konradzuse):
gimme a sec.
OpenStudy (konradzuse):
Youwant to look at the double angle formulas.
OpenStudy (anonymous):
i got b
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