Question

Question 94 ptsONLY write your answer as a number. You do not needto write the unit measurement.Round you answer to the nearest tenth.15. A fireman leaned a 42-foot ladder against a building. If he placed the ladder 8.5 feetfrom the base of the building, what angle is formed between the ladder and the ground

Answer 1

The length of ladder is L = 42 foot.

The distance between base of building and ladder is b = 8.5.

Determine the measure of angle by using the trigonometry.

`\begin{gathered} \cos \theta=(8.5)/(42) \\ \theta=\cos ^(-1)(0.20238) \\ =78.323 \\ \approx78.3 \end{gathered}`

So measure of angle is 78.3 degree.