Let veca,vecb and vecc be three unit vec...

Let `veca,vecb` and `vecc` be three unit vectors such that : `vecaxx(vecbxxvecc)=(sqrt3)/2 (vecb+vecc)`. If `vecb` is not parallel to `vecc`, then angle between `veca` and `vecb` is :

`pi/2`

`(2pi)/3`

`(5pi)/6`

`(3pi)/4`

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MODERN PUBLICATION-VECTORS-Exercise

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Let vec(PR)=3hati+hatj-2hatk and vec(SQ)=hati-3hatj-4hatk determine di...
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If [vecaxxvecb vecbxxvecc veccxxveca]=lambda[veca vecb vecc]^2, ...
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Let veca,vecb and vecc be three non-zero vectors such that no two of t...
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Let veca,vecb and vecc be three unit vectors such that : vecaxx(vecbxx...
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Show that the following vectors are collinear : 2hati-3hatj+4hatk and ...
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Show that the vectors : 2hati-hatj+hatk,hati-3hatj-5hatk and 3hati-4ha...
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If vecr=xhati+yhatj+zhatk, find : (hatrxxhati)*(hatrxxhatj)+xy.
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Prove that : sin(A- B) = sin A cos B -cos A sin B.
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