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Equation identities

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For all values of x for which the expressions are defined, prove the following equation identity2/sec = 2-2 sin^2 x/ cos x
1. 3 answers
2. asked by Anna
3. 509 views
verify that the equation is an identity:(1-cosX)/(1+cosX) = (cscX-cotX)^2
1. 4 answers
2. asked by Haley
3. 570 views