Question

For vectors A  and B  making an angle  ,  which one of the following relations is correct

 (a)   A X B= B X A

 (b)   A X B = AB sin

 (c)   A X B = AB cos

(d)    A X B=  - B X A
​

Answer 1

Answer:

Option - A

Explanation:

A*B = B*A

Eg - 2*3 = 3*2

6 = 6

Two vectors making an angle -

[AB]^2 = P^2 + Q^2 + 2PQCOStheta