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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04-04-2018
Mathematics

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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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Can you help me please?

CastleRook CastleRook · Answer 1 · 2018-04-13T10:49:16+02:00

CastleRook CastleRook

13-04-2018

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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