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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 _______

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The correct Answer is:
`pi/6`
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VMC MODULES ENGLISH-VECTORS -JEE ADVANCED (ARCHIVE)
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