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There is an airplane at an altitude of 12000 ft. The angle of depression is 1 degree. How far on the ground is the plane.

  • Trig -

    Did you make a sketch?

    if so , you will see that
    tan 1° = 12000/x , where x is the distance along the ground
    x = 12000/tan 1° = .....

    "How far on the ground is the plane ? " sounds like a very strange question.

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