Given a parallelogram OACB. The length of the vectors (OA , OB & AB) are a, b, & c respectively. The scalar product of the vectors (OC & OB) is
(a) (a2 – 3b2 + c2 )/2
(b) (3a2 + b2 – c2 )/2
(c) (3a2 – b2 + c2 )/2
(d) (a2 + 3b2 – c2)/2
Correct option (d) (a2 + 3b2 – c2)/2
Explanation:
