Answer the following.
(a) For each function below, indicate whether it is odd, even, or neither.
$f(x) = \cos x$
Odd
Even
Neither
$g(x) = \csc x$
Odd
Even
Neither
(b) $\cos(-42^\circ) = $ (Choose one)
(c) $\csc \left(-\frac{\pi}{7}\right) = $ (Choose one)