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Points ` vec a , vec b , vec c ,a n d vec d` are coplanar and `(sinalpha) vec a+(2sin2beta) vec b+(3sin3gamma) vec c- vec d=0.` Then the least value of `sin^2alpha+sin^2 2beta+sin^2 3gammai s` a. `1/(14)` b. `14` c. `6` d. `1//sqrt(6)`

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CENGAGE ENGLISH-VECTOR ALGEBRA-All Questions
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  14. The condition for equations vec rxx vec a= vec ba n d vec rxx vec c...

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  15. If aa n db are nonzero non-collinear vectors, then [ vec a vec b hat...

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  16. ( vec a+ vec b)dot( vec b+ vec c)xx( vec a+ vec b+ vec c)= [ vec a\ ...

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  17. A vector of magnitude 10 along the normal to the curve 3x^2+8x y+2y^2-...

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  18. If a( vecalphaxx vecbeta)+b( vecbetaxx vecgamma)+c( vecgammaxx vecalph...

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  19. If ( vec axx vec b)xx( vec bxx vec c)= vec b ,w h e r e vec a , vec b ...

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  20. If vec a , vec b , vec c are any three noncoplanar vector, then ( ...

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