Consider two vectors a~ and b~ and their resultant a~ + b~ . the magnitudes of the vectors a~ and b~ are, respectively, 15 and 7.3 and they act at 86◦ to each other. a~ b~ a~ + b~ find the magnitude of the resultant vector a~ + b~ . 005 (part 2 of 2) 4.0 points find the angle between the direction of the resultant vector a + b and the direction of the vector a. answer in units of ◦ .