Range of a projectile is R, when the angle of projection is `30^(@)`. Then, the value of the other angle of projection for the same range is

Prove that there are two angles of projection for the same range ?

The range of a projectile is R when the angle of projection is 30^@ . For the same velocity of projection and range the other possible angle of projection is:

The range of a projectile is R when the angle of projection is 40^(@) . For the same velocity of projection and range, the other possible angle of projection is

The range of a projectile is R when the angle of projection is 40^(@) . For the same velocity of projection and range, the other possible angle of projection is

How many angles of projection are there for the same range?

Show that for angles of projection theta and 90^(@)-theta , the range of the projectile is the same.

A ball will project with a speed u at an angle of projection 30^@ has a range R.Is there any other value of angle of projection at which the range with same initial speed u is R?

A ball projected with speed 'u' at an angle of projection 15^(@) has range R. The other angle of projection at which the range will not be same with same initial speed 'u' is