The angle of elevation of an aeroplane from a point on the ground is 60 . After flying for 15 second, the angle of elevation changes to 30 . If the Aeroplane is flying at a height of 4500 meter, then what is the speed (in m/s) of aeroplane?

The angle of elevation of an aeroplane from a point on the ground is 6

1.	The angle of elevation of an aeroplane from a point on the ground is 60 . After flying for 15 second, the angle of elevation changes to 30 . If the Aeroplane is flying at a height of 4500 meter, then what is the speed (in m/s) of aeroplane?
A.	$$ {150 sqrt{3}}$$
B.	$$ {200 sqrt{3}}$$
C.	$$ {100 sqrt{3}}$$
D.	$$ {50 sqrt{3}}$$
Answer» C. $$ {100 sqrt{3}}$$

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The angle of elevation of an aeroplane from a point on the ground is 60 . After flying for 15 second, the angle of elevation changes to 30 . If the Aeroplane is flying at a height of 4500 meter, then what is the speed (in m/s) of aeroplane?

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