Questions
If angle between
a
π3
b
2π3
c
π6
d
5π3
detailed solution
Correct option is B
Step 1: Draw vector a and b [Ref. Fig.1] Step 2: Draw 2a and −3b [Ref. Fig.2]Vector 2a will be twice the length of a in the same direction.Vector −3b will be of thrice the size of vector b but in opposite direction. Let ϕ be the angle between 2a and −3b. ∅=π-π/3=2π/3 Hence, Angle between 2a and −3b is 2π/3. 2π3Talk to our academic expert!
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