Erich V.
asked • 01/23/23A helicopter flying 3,590 feet above ground spots the top of a 150 foot tall cell tower at an angle of depression of 77 degrees. How far does the helicopter fly to be directly over the tower?
Round your answer to the nearest tenth.
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1 Expert Answer
First, draw and label a diagram.
3590 - 150 = 3440 = distance between top of tower and helicopter when the helicopter is directly over the t
tower
At that time, tan 77° = 3440 / x, where x is the distance flown by the helicopter
Solve for x.
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Stanton D.
So Erich, draw a sketch (view from the side, i.e. perpendicular to the heli / towertop/towerbase plane), and figure out how to make a right triangle. The rest is routine trig calculation.01/23/23