Jack is using a ladder to hang up light up on his house. He placed the ladder 5feet from the base of his house and leans it so it reaches a window 14 feet above ground. Find the angle of elevation of the ladder.

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter6: Circles
Section6.1: Circles And Related Segments And Angles
Problem 27E: A ceiling fan has equally spaced blades. What is the measure of the angle formed by two consecutive...
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Jack is using a ladder to hang up light up on his house. He placed the ladder 5feet from the base of his house and leans it so it reaches a window 14 feet above ground. Find the angle of elevation of the ladder. 

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We apply here trigonometric ratios rule 

I used costheta 

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