$\"\"$

(a)

The inclination angle is $\"\"$ .

Opposite side to inclined angle $\"\"$ is $\"\"$ feet.

Draw a diagram using above information.

$\"\"$

(b)

Observe the diagram.

The trigonometric function : $\"\"$ .

$\"\"$

The value of $\"\"$ is $\"\"$ ft.

$\"\"$

The value of $\"\"$ is $\"\"$ ft.