Answer the following:

Question

A 13-foot ladder is used to scale a 9-foot wall. At what angle of elevation must the ladder be situated in order to reach the top of the wall? Round answer to the nearest degree.

Choices:

44 degrees

46 degrees

35 degrees

56 degrees

Answer 1

A 13-foot ladder is used to scale a 9-foot wall. At what angle of elevation (θ) must the ladder be situated in order to reach the top of the wall? Round answer to the nearest degree. Choices: A) 44⁰ B) 46⁰ C) 35⁰ D) 56⁰

Detailed Solution:

Given/Known: r = 13-foot y = 9-foot θ = ??

sin θ = y/r = 9/13

θ = sin^-1 (9/13)

θ = 43.81306146⁰

θ = 44⁰ <== Final Answer (A) 44⁰)