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A projectile is fired from the base of c...

A projectile is fired from the base of coneshaped hill. The projectile grazes the vertex and strikes the hill again at the base.If `alpha` be the half-angle of the cone, `h` its height, `u` the initial velocity of projection and `theta` angle of projection, then then `theta tan theta`is

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A projectile is fired from the base of cone shaped hill. The projectle grazes the vertex and strikes the hill again at the base. If alpha be the half-angle of the cone, h its height, u the initial velocity of projection and theta angle of projection, then tan theta tan alpha is:

At highest point velocity of projectile is …... ( theta = angle of projection).

The velocity at the maximum height of a projectile is half of its initial velocity of projection. The angle of projection is

The velocity at the maximum height of a projectile is half of its initial velocity of projection. The angle of projection is