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OpenStudy (anonymous):
Prove: tanx/(secx+1)=(secx-1)/tanx Step by step. simple. Just say how you got the answer. :)
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OpenStudy (raden):
let's prove the LHS can be RHS tanx/(secx+1) multiply by (secx - 1)/(secx - 1) = ...
Parth (parthkohli):
@whpalmer4
OpenStudy (raden):
|dw:1370423892062:dw|
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