Question

A = Sec X – Cos X
Csc X – Sen X

Answer 1

respuesta  

Solución: sen x cos2 x - sen x  

Factorizando sen(x) sen x ( cos 2 x - 1 )  

Usando la identidad  

cos 2 ( α ) + sen 2 ( α ) = 1  

sen x ( cos 2 x - ( cos 2 ( x ) + sen 2 ( x )  

sen x ( cos 2 x - cos 2 ( x ) - sen 2 ( x )  

Simplificando sen x ( - sen 2 ( x ) )