The function is $\"\"$ .

Graph the function in degrees mode.

$\"\"$

Observe the graph:

There are infinite number of relative maximuma and minimum.

The relative maximum is $\"\"$ and occurs at $\"\"$ .

The relative minimum is $\"\"$ and occurs at $\"\"$ .

Graph of the function $\"\"$ :

$\"\"$

There are infinite number of relative maximuma and minimum.

The relative maximum is $\"\"$ and occurs at $\"\"$ .

The relative minimum is $\"\"$ and occurs at $\"\"$ .