A body is projected at an angle of $45^{\circ}$ with the horizontal with a velocity of $60 \sqrt{2}…
A body is projected at an angle of $45^{\circ}$ with the horizontal with a velocity of $60 \sqrt{2} \mathrm{~ms}^{-1}$. Then the angle made by its velocity with the horizontal after $6 \mathrm{~s}$ is