Question

Danny has a 15-foot board that he wants to use as a motorcycle ramp. If Danny wants the end of the ramp to be 4 feet off the ground, what angle will be formed between the board and the ground? Round the answer to the nearest whole degree.

Answer 1

In the right triangle formed, the side that is opposite of the angle being referred to is 4 ft and the hypotenuse is 15 ft. The proper trigonometric function that must be used is the sin such that, 
                                 sin A = opposite / hypotenuse = 4 ft / 15 ft
The value of the angle is 15°.