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If A=B+C and the values of A,B and C are...

If A=B+C and the values of A,B and C are 13,12 and 5 respectively, then the angle between A and 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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The correct Answer is:
A
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