$\"\"$

Find the the width of a ravine.

The trigonometric function : $\"\"$ .

The acute angle $\"\"$ is $\"\"$ .

The opposite side to acute angle $\"\"$ is $\"\"$ .

The adjacent side to acute angle $\"\"$ is $\"\"$ .

$\"\"$

The width of a ravine is $\"\"$ ft.

$\"\"$

The width of a ravine is $\"\"$ ft.