A stone is thrown with a velocity π£ making an angle ΞΈ with the horizontal. At some instant, its velocity π is perpendicular to the initial velocity π£. Then π is

A stone is thrown with a velocity π£ making an angle ΞΈ with the horizontal. At some instant, its velocity π is perpendicular to the initial velocity π£. Then π is

Question : A stone is thrown with a velocity π£ making an angle ΞΈ with the horizontal. At some instant, its velocity π is perpendicular to the initial velocity π£. Then π is