adamon3535
adamon3535
28-12-2017
Mathematics
contestada
sinplify f (x)=cos (-x)csc (-x)
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mathmate
mathmate
28-12-2017
f(x)=cos(-x)csc(-x)
=cos(x)(-csc(x))
=-cos(x)(1/sin(x))
=-cos(x)/sin(x)
=-cot(x)
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