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If vector P, Q and R have magnitude 2,2,...

If vector P, Q and R have magnitude `2,2`, and 2 units and `vec(P) + vec(Q) = R` then, the angle between `vec(Q)` and `vec(R )` is -

A

`30^(@)`

B

`60^(@)`

C

`120^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
If magnitude of resultant of tow vectors having same magnitude is the same as that of each of the vectors then, angle between the two vectors is `120^(@)`
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