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let veca , vecb and vecc be three vector...

let `veca , vecb and vecc` be three vectors having magnitudes 1, 1 and 2, respectively, if `vecaxx(vecaxxvecc)+vecb=vec0, ` then the acute angle between `veca and vecc` is _______

A

`pi/3`

B

`pi/4`

C

`pi/6`

D

none of these

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The correct Answer is:
C
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ARIHANT MATHS ENGLISH-PRODUCT OF VECTORS-Exercise (Questions Asked In Previous 13 Years Exam)
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