Casey C.

asked • 02/26/15

Prove the Trigonometric Identity

(sinx/cscx-1) + (sinx/cscx+1) = 2tan2x

Michael J.

Check your question.   You have to get tan2x,  which is sin2x / cos2x.
 
cscx  can only be written as  1/sinx.   This makes everything on the left side in terms of sinx.  There needs to be a cosx term in order to make this work.
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02/27/15

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