Question

15. (A + B)2 = A2+B2then
A and B must be parallel and in the same direction
B A and B must be parallel and in opposite direction
Ceither Aor B must be zero
D. the angle between A and B must be 90​

Answer 1

Answer:

option C)

For example

A is 0 then,

(0+B)2=0×2+B2

(B)2=B2

B2=B2

LHS=RHS