A 90-foot rope from the top of a tree house to the ground forms a 45° angle of elevation from the ground.?
How high is the top of the tree house? Round your answer to the nearest tenth of a foot.
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How high is the top of the tree house? Round your answer to the nearest tenth of a foot.
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Answers & Comments
height = 90/√2 feet. You can do the math.
:-
sin 45° = y/90
y = 90 sin 45°
y = 90 √2 / 2
y = 45 √2
y = 63•6 ft is the height of the tree house.