Question

Question 5 A ladder leans against the side of a house. The angle of elevation of the ladder is 65 degrees when the bottom of the ladder is 16 ft. from the side of the house. Find the length of the ladder. Round your answer to the nearest tenth.

Answer 1

Answer: 37.9 ft

Explanation:

concept to know: trigonometric relation (sine, cosine, tangent)

In this case, we use cosine (adjacent/hypotenuse)

cos (65)=16/x

16/ cos(65)=x

x=37.9 ft (rounded)