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If vecaxxvecb=vecc,vecb xx vecc=veca, wh...

If `vecaxxvecb=vecc,vecb xx vecc=veca,` where `vecc != vec0,` then

A

`|veca|=|vecc|,|vecb|=1`

B

`|veca|=|vecb|,|vec|=1`

C

`|vecb|=|vecc|,|veca|=1`

D

`|veca|ne |vecc|`

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AAKASH INSTITUTE ENGLISH-VECTOR ALGEBRA-ASSIGNMENT (SECTION-A)
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  2. Let veca , vecb and vecc be three non-zero vectors such that veca + ve...

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  3. If vecaxxvecb=vecc,vecb xx vecc=veca, where vecc != vec0, then

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  4. ABCDEF is a regular hexagon where centre O is the origin, if the posit...

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  5. The value of the following expression hati.(hatjxxhatk)+j.(hatixxhat...

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  6. For any vector veca the value of (vecaxxhati)^2+(vecaxxhatj)^2+(vecaxx...

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  7. If |vecaxxvecb|=2,|veca.vecb|=2, then |veca|^(2)|vecb|^(2) is equal to

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  8. |(vecaxxvecb)|^(2) is eqaul to

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  9. If veca and vecb are unit vectors, then which of the following values ...

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  10. If veca.veci=veca.(hati+hatj)=veca.(hati+hatj+hatk) . Then find the un...

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  11. If veca +vecb +vecc =vec0, |veca| =3 , |vecb|=5 and |vecc| =7 , then ...

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  12. The vector cosalpha.cosbetahati+cosalpha.sinbetahatj+sinalphahatk is a...

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  13. If |veca|=|vecb|, then (veca+vecb).(veca-vecb) is equal to

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  14. If veca and vecb are unit vectors inclined at an angle theta, then the...

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  15. The projection of the vector hati+hatj+hatk along the vector of hatj i...

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  16. If OACB is a parallelogram with vecOC=veca and vecAB=vecb, then vecOA ...

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  17. If veca, vecb, vecc, vecd are the position vectors of points A, B, C a...

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  18. If the vectors 3hati+lambdahatj+hatk and 2hati-hatj+8hatk are perpendi...

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  19. The vectors 2hati+hatj-4hatk and ahati+bhatj+chatk are perpendicular, ...

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  20. Let veca , vecb , vecc be three unit vectors such that |veca + vecb +...

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