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(22) if `vec p and vec q`are unit vectors forming an angle of `30^@`; find the area of the parallelogram having `veca=vecp+2vecq and vecb=2vecp+vecq` as its diagonals. (23) For any two vectors ` vec a` and ` vec b` , prove that `| vec a xxvec b|^2=| [vec a* vec a ,vec a*vec b],[ vec b* vec a, vec b* vec b]|` .

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RD SHARMA ENGLISH-VECTOR OR CROSS PRODUCT -All Questions
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  2. If a ,b ,c are the lengths of sides, B C ,C A and A B of a trian...

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  3. (22) if vec p and vec qare unit vectors forming an angle of 30^@; find...

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  4. If vec p and vec q are unit vectors forming an angle of 30^0; ...

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  6. Find the area of the parallelogram whose diagonals are : 4 hat i- ...

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  15. A B C D is quadrilateral such that vec A B= vec b , vec A D= vec d , ...

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