1.

If (vec(a), vec(b))= pi, then |4vec(a) xx 5vec(b) + vec(b) xx vec(a)|=

Answer»

0
`19 |VEC(a)| |vec(B)|`
`|vec(a) | |vec(b)|`
`2|vec(a)| |vec(b)|`

ANSWER :A


Discussion

No Comment Found