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A ball is thrown from the ground to cle...

A ball is thrown from the ground to clear a wall 3 m high at a distance of 6 m and falls 18 m away from the wall the angle of projection of ball is :-

A

`tan ^(-1)((3)/(2))`

B

`tan^(-1)((2)/(3))`

C

`tan ^(-1)((1)/(2))`

D

`tan^(-1)((3)/(4))`

Text Solution

Verified by Experts

The correct Answer is:
B
From equation of trajectory. `y= x tan theta [ 1-(x)/(R ) ] rArr 3 = 6 tan theta [ 1- (1)/(4)] rArr tan theta = (2)/(3) `
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