When an aeroplane is 800m above the ground, it's angle of elevation from a point p on the ground is 30 degrees. How far is the aeroplane from p
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Answer:
tan60
∘
=
x
3000
3
x=
3
3000
3
=3000m
tan30
∘
=
1/
3
3000
3
=9000m
distance covered = 9000- 3000
= 6000 m.
speed =
30
6000
=200m/s
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