0. Functions

Evaluate the expression.

$\(\cos\)^{-1}\(\left\)(-1\(\right\))$

Evaluate the expression.

$\(\cos\)^{-1}\(\left\)(0\(\right\))$

Evaluate the expression.

$\(\cos\)^{-1}\(\left\)(-\(\frac{\sqrt2}{2}\)\(\right\))$

Evaluate the expression.

$\(\sin\)^{-1}1$