# A stone thrown at an angle θ to the horizontal a projectile makes an angle 𝜋/4 with the horizontal, then its initial velocity and angle of projection are, respectively

Question : A stone thrown at an angle θ to the horizontal a projectile makes an angle 𝜋/4 with the horizontal, then its initial velocity and angle of projection are, respectively

(A) $\dfrac{\sqrt{2h\sin \theta }}{g}$

(B) $\dfrac{2\sqrt{2h\sin \theta }}{g}$

(C) $2\sqrt{\dfrac{2h}{g}}$

(D) $\sqrt{\dfrac{2h}{g}}$