$\"\"$

From the diagram hypotenuse = 18 and the angle $\"\"$ .

Find the opposite side of the angle by using the trigonometric function.

$\"\"$

Substitute $\"\"$ and hypotenuse = 18 in above function.

$\"\"$

$\"\"$ .

$\"\"$

Multiply each side by 18.

$\"\"$

The value of $\"\"$ .