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If vec(A) = vec(B) - vec( C) then determ...

If `vec(A) = vec(B) - vec( C)` then determine the angle between `vec(A) and vec(B)`

A

`theta = cos^(-1) [(A^(2) + B^(2) - C^(2))/(2AB)]`

B

`theta = sin^(-1) [A^(2) + B^(2) - C^(2))/(2AB)]`

C

`theta = tan^(-1) [(A^(2) + B^(2) - C^(2))/(2AB)]`

D

`theta = cot^(-1) [(A^(2) + B^(2) - C^(2))/(2AB)]`

Text Solution

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The correct Answer is:
A
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