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If vec(A)=vec(B)+vec(C ), and the magnit...

If `vec(A)=vec(B)+vec(C )`, and the magnitudes of `vec(A)`,`vec(B)`,`vec(C )` are 5,4, and 3 units, then the angle between `vec(A)` and `vec(C )` is

A

`cos^(-1) (3//5)`

B

`cos^(-1)(4//5)`

C

`(pi)/(2)`

D

`sin^(-1)(3//4)`

Text Solution

Verified by Experts

The correct Answer is:
a
`cos theta = 3//5`
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