$\"\"$

\

Find $\"\"$ .

\

Observe the figure :

\

$\"\"$ , $\"\"$ , and $\"\"$ .

\

Pythagorean theorem : $\"\"$ .

\

$\"\"$

\

Solve the above equation by factor method.

\

$\"\"$

\

Thus, the values of $\"\"$ . $\"\"$

\

The values of $\"\"$ .