What does $4csc(arc cos(-7))-2cos(arcsin(-4))$ equal?

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Answer 1 · 2016-09-03T16:21:04

The value of this expression is undefined. Seee explanation.

$arccos$ and $arcsin$ functions are both defined on interval $<-1;1>$ therfore the values $arccos(-7)$ and $arcsin(-4)$ are not defined.

What does 4csc(arc cos(-7))-2cos(arcsin(-4))4csc(arc cos(-7))-2cos(arcsin(-4)) equal?