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IF the magnitudes of vectors vec(A), vec...

IF the magnitudes of vectors `vec(A), vec(B)` and `vec(C )` are 6,8,10 units respectively and if `vec(A) + vec(B) = vec(C )`, then the angle between A and C is :

A

`cos^(-1)((5)/(12))`

B

`cos^(-1)((5)/(13))`

C

`cos^(-1)((12)/(13))`

D

`cos^(-1)((7)/(13))`

Text Solution

Verified by Experts

The correct Answer is:
C

`costheta=(Q)/(R)`
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