Question

The scalar product of two non-zero vectors is zero if the angle between them is- (a) 0° (b) 180° (c) 90° (d) 120°​

Answer 1

Answer:

90 degrees

Explanation:

The scalar product, or the dot product of two vectors is A and B is defined as

A.B.cosx , where x is the angle between the two vectors.

Since A and B are non zero vectors, AB is not equal to 0

This means cosx is 0

cosx will be 0 only if the angle is odd multiples of π/2

Since 90 = pi/2

cos90 = 0