\
The function is .
The domain of the function is .
Find the inverse function.
\Change to
.
.
Interchange the variables and
.
.
Divide on each side by .
Apply inverse trigonometric property: .
Subtract each side by .
Divide on each side by .
Change to
.
The inverse function is .
\
Find the range of function.
\.
.
Range of cosine function: .
Therefore, .
The range of is
.
The range of is equal to the domain of
.
The domain of is
.
\
The inverse function is .
The range of of is domain of
.
The domain of is
or
.
The range of is
.
\
The inverse function is .
The range of is
.
The domain of is
.
The range of is
.