A rod of length L0 moves iwth a speed v along the horizontal direction. The rod makes an angle of (theta)0 with respect to the x' axis (a) show that the length of the rod as measured by a stationary observer is L=L0[1-v^2/c^2 cos^2(theta)0]^.5 (B) show that the angle the rod makes with the x-axis is given by the expression tan (theta) = tan (theta) 0/(1-v^2/c^2)^.5