Question

88) The magnitude of the vector A,B and C are respectively 12,5 and 13 units and vector A+B=C then the angle between vector A and B is
a. 0
b. π
c. π/2
d. π/4

Answer 1

Angle 90 =pi/2 between by A &B

Answer 2

π/2 or 90° is the correct answer