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OpenStudy (anonymous):
Prove:
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OpenStudy (anonymous):
\[Tan^2x - \cos^2x = 1/\cos^2 - 1 - \cos^2x\]
OpenStudy (lgbasallote):
can you rewrite that right side? is that \[\frac 1{cos^2 x - 1} - \cos ^2 x\]
OpenStudy (anonymous):
|dw:1352207602501:dw|
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