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If vectors vec P, vec Q, vec R have magn...

If vectors `vec P, vec Q, vec R` have magnitudes 5, 12, and 13 units and `vec P + vec Q = vec R` the angle between Q and R is

A

`cos^-1( 5/12)`

B

`cos^-1 (5/13)`

C

`cos ^-1 (12/13)`

D

`cos ^-1 (2/13)`

Text Solution

Verified by Experts

The correct Answer is:
C
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