TANCET
Group Studies
Mock Tests
Notes
Library
Join Now
Question Practice
Share
Target (sec):
00:00
Question 1
Share
Angle between $\vec{a}$ and $\vec{b}$ is $120{^{\circ}}$. If $|\vec{b}|=2|\vec{a}|$ and the vectors , $\vec{a}+x\vec{b}$ , $\vec{a}-\vec{b}$ are at right angle, then $x=$
A.
$\frac{1}{3}$
B.
$\frac{1}{5}$
C.
$\frac{2}{3}$
D.
$\frac{2}{5}$
Discussion
Join the Conversation
Log in to post comments and replies.
Log In
Open Discussion
❓ Question: Practice this question with detailed solutions and... | TANCET Group Studies | Tancet Group Studies