On an incliend plane two particles A and B are projected with same speed at the same angle with the horizontal, particle A down and particle B up the plane. If the ratio of time of flight of A and B is cot theta, is the angle at which B is projected measured from. inclined plane, find the angle at which particles are projected.

On an incliend plane two particles A and B are projected with same spe

1.	On an incliend plane two particles A and B are projected with same speed at the same angle with the horizontal, particle A down and particle B up the plane. If the ratio of time of flight of A and B is cot theta, is the angle at which B is projected measured from. inclined plane, find the angle at which particles are projected.
Answer» `90^(@)` `60^(@)` `30^(@)` `45^(@)` SOLUTION :Let B MAKES an ANGLE `alpha` with horizontal. So `gamma+alpha=theta`