Question

A carpenter is making a ramp for a ski jump.

The ramp is made from a 25 ft. board titled at

a 30° angle from the ground. Approximately

how far off the ground is the end of the ramp?

Answer 1

12.5 ft

Explanation:

To solve this, we would be applying Pythagoras theorem to it.

Assuming that our given angle is the hypotenuse. Since it says it's closer to the elevated angle. Then, we're looking for a side, A, which is on the opposite side of the angle in the question.

Using sine rule, we know that

Sin 30 = x/25

x = 25 sin 30

x = 25 * 0.5

x = 12.5 ft

Therefore the answer is 12.5 ft