The angle of elevation of an aeroplane from a point on the ground is 60° .After a flight of 30 sec the angle of elevation becomes 30°. If the aeroplane is flying at a constant height of 3000√3 m, find the speed of the aeroplane.
Question
Can understand till how it's is proved as parallelogram but after that cannot understand
How each angle is 90°
How each angle is 90°
Maths
Dec. 8, 2019, 7 p.m.
Answer
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