Question

If | a ⃗ + b ⃗ | = | a ⃗ - b ⃗ |
r r r r then angle between a ⃗ & b ⃗
r r is
(a) 45º (b) 30º
(c) 90º (d) 180º

Answer 1

Answer:

The angle is 90 degree. Solution: To calculate the angle between them, we need to draw the vector diagram of both.

Answer 2

see

the

attachment.....