The figure shows three displacement vectors A, B, and C. These vectors are arranged in tail-to-head fashion, and they add together to give a resultant displacement R, which lies along the x axis. Note that vector B is parallel to the x axis. What is (a) the magnitude of vector A and (b) its directional angle 0? +y B 12.0m A 25.0m C R 53.0 +x 40.0m (a) Number Units m (b) Number Units O