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23 September, 20:08

The angle of elevation of an airplane is 9. the distance to the plane is 21 km. how high is is the plane?

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  1. 23 September, 22:59
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    The height of the plane will be found using the formula:

    sin θ=[opposite]/[hypotenuse]

    Thus the height will be given by:

    sin 9=h/21

    solving for h we get

    h=21 * sin 9

    h=3.285 km

    Answer: 3.285 km
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