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Let veca, vecb and vecc be non - coplana...

Let `veca, vecb and vecc` be non - coplanar unit vectors, equally inclined to one another at an angle `theta`. If `veca xx vecb + vecb xx vecc = p veca + q vecb + rvecc`, find scalars p, q and r in terms of `theta`.

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The correct Answer is:
`p=r=1/sqrt(1+2 costheta), q=(-2 cos theta)/sqrt(1+2 cos theta)`
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VMC MODULES ENGLISH-VECTORS -JEE ADVANCED (ARCHIVE) (TRUE/ FALSE)
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