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OpenStudy (anonymous):
how do you verify sec^2 theta(1 - cos^2 theta) = tan^2 theta
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OpenStudy (anonymous):
Do you know the identity sin^2 theta + cos^2 theta =1 ?
OpenStudy (anonymous):
yes, do I just use that?
OpenStudy (anonymous):
okay so 1-cos^2 theta can be written as sin^2 theta
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