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Physics Projectile motion

A bullet fired at an angle 60° with the vertical hits the levelled ground at distance of 200 m. Find the distance at which the bullet will hit the ground when fired at an angle of 30°(with same speed)

Both will have the same range since the angles θ and (90-θ) will result in the same range. For a given speed of projection there are two possible angles of projection to obtain the same range.