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If `vec A = vec B+ vec C` and the values of `vec A, vec B and vec C` are 13, 12 and 5 respectively, then the angle between `vec A` and `vec C` will be

A

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

B

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

C

`pi/2`

D

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

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