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 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