Question

the magnitude of vector A ,B and C are
12,5 and 13 respectively,i f A+B=C
then
what is the angle between vector A and B?​

Answer 1

Answer:

12, 5 and 13 are right triangle triplets i.e. 144 + 25 = 169, clearly ABC can form a right angled triangle. Given in the statement, A + B = C, with respect to vectors, A and B are height - base pair. This brings us to the conclusion that: Angle between A and B must be 90deg or pi/2.