A body of mass 1 kg is moving with a velocity v=10^i+5^j m/s. What is the angle made by the momentum vector with x− axis?
A bird is flying due east with a velocity of 4 m/s. The wind starts to blow with a velocity of 3 m/s due north. What is the magnitude of relative velocity of bird w.r.t. wind? Find out the angle it makes with the x-axis?
If tan−11a−1=tan−11x+tan−11a2−x+1, then x is