Question

# Let →a,→b,and →c be three unit vectors such that →a×(→b×→c)=√32(→b×→c).If →b is not parallel to →c, then the angle between →a and →b is :

A

B

C

D

Solution

## The correct option is C →a×(→b×→c)=(→a.→c)→b−(→a.→b)→c=√32(→b+→c)and after comparing→a.→b=−√32⇒cosθ=−√32⇒θ=−5π6Co-Curriculars

Suggest Corrections

0

Similar questions
View More