$\"\"$

\

The function is $\"\"$ .

\

Find the $\"\"$ - intercepts by equating $\"\"$ to zero.

\

$\"\"$

\

Common out $\"\"$ from the left hand side of the equation.

\

$\"\"$

\

Pythagorean identity : $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Solve $\"\"$ .

\

$\"\"$

\

The general solution of $\"\"$ is $\"\"$ , where $\"image\"$ is an integer.

\

The solution is $\"\"$ , where $\"image\"$ is an integer.

\

Now find the solutions on the interval $\"\"$ .

\

If $\"\"$ , $\"\"$ .

\

If $\"\"$ , $\"\"$ .

\

Thus, the solutions are $\"\"$ and $\"\"$ on the interval $\"\"$ .

\

$\"\"$

\

The $\"\"$ - intercepts are $\"\"$ and $\"\"$ on the interval $\"\"$ .