Question

A + B = 0 and AB = -36
What is the value of A - B?​

Answer 1

Answer:

Correct option is

E

3

∣b∣

We have a.b=0⇒a⊥b

so, vectors a,b and a+b form a right angled triangle

In △PQR

tan60

o

=

∣b∣

∣a∣

⇒

3

=

∣b∣

∣a∣

⇒∣a∣=

3

∣b∣