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Mathematics, 23.07.2019 15:20 kelseydavid69

Ahelicopter flies horizontally at 100 kmph. an observer notices that it took 20 seconds for the helicopter to fly from directly overhead to being at an angle of elevation of 60 degrees. find the height of the helicopter above the ground.

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Ahelicopter flies horizontally at 100 kmph. an observer notices that it took 20 seconds for the heli...
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