Question

While landing at an airport, a pilot made an
angle of depression of 20°. Average speed of
the plane was 200 km/h. The plane reached
the ground after 54 seconds. Find the height
at which the plane was when it started
landing.
(sin 20° = 0.342 )​

Answer 1

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Maths

Some Applications of Trigonometry

Heights and Distances

While landing at an airport...

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Asked on December 26, 2019 bySangita Murmu

While landing at an airport, a pilot made an angle of depression of 20o. Average speed of the plane was 200 km/hr. The plane reached the ground after 54seconds. Find the height at which the plane was when it started landing. (sin20o=0.342)

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ANSWER

l∥BC⇒∠ABC=20o

AC=Speed×time=200×360054km

=3 km

sin20=ACAB⇒h=3×0.342

h=1.026km



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Answer 2

Answer:

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