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OpenStudy (solomonzelman):
I am not sure. I think it's true, but just want clarification.
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OpenStudy (solomonzelman):
\[Sec^2x~Cos^2x=1\]
OpenStudy (anonymous):
I wasn't so sure myself, so I put it into WolframAlpha.com The solution came up as "True"
OpenStudy (solomonzelman):
Thank you for the clarification!
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