Question: the two vectors a and b have equal magnitudes of 10.0 m?
Answer: The two vectors a and b in Fig. 3-28 have equal magnitudes of 10.0 m and the angles are theta_+1 = 30 degree and theta_2 = 105 degree. Find the x and y components of their vector sum 7, the magnitude of r, and the angle r makes with the positive direction of the x axis.