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Mathematics 44 Online
OpenStudy (anonymous):

what is plane trig proof for (1/1+cosx) + (1/1-cosx) = 2csc^2x

OpenStudy (anonymous):

"plane" or "plain"?

OpenStudy (anonymous):

thats not important

OpenStudy (anonymous):

Well, I have never heard of a plane proof, if that is a proper proof. Otherwise, this is a very simple identity to show.

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