Respuesta:
D) -cscx
Explicación paso a paso:
[tex]E= \frac{sec(90 + x)\ .\ csc (180+x)}{sec (270 - x)}\\\\E= \frac{-cscx \ . \ -cscx}{-cscx} \\\\E= \frac{cscx^{2}}{-cscx} \\\\E= -cscx[/tex]
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Verified answer
Respuesta:
D) -cscx
Explicación paso a paso:
[tex]E= \frac{sec(90 + x)\ .\ csc (180+x)}{sec (270 - x)}\\\\E= \frac{-cscx \ . \ -cscx}{-cscx} \\\\E= \frac{cscx^{2}}{-cscx} \\\\E= -cscx[/tex]