Question

if A+B=R AND 2A+B IS PERPENDICULAR TO B THEN

Answer 1

If two vectors are perpendicular then their dot product will be zero.

Also a. b= ab cos theta

Answer 2

Explanation:

A+B=R

so,

B=R-A

so,

2A+B

=2A+2B-B

=2(A+B)-B

=2R - (R-A)

=2R-R+A

=R+A

hope this helps you