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posted by Angela Sunday, July 24, 2011 at 6:39pm.
which of the expressions are identical? a) cos^2x b)(cosx)^2 c) cos (x^2) d) (sinx)^-1 E) sin^-1 x f) sin (x^-1) g) 1/ sin x
a , b it would also be 1 -sin^2 x but that is not listed :)
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