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The points with position vectors 60hati+...

The points with position vectors `60hati+3hatj,40hati-8hatj, ahati-52hatj` are collinear if (A) `a=-40` (B) `a=40` (C) `a=20` (D) none of these

A

`-20`

B

40

C

`-40`

D

20

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AAKASH INSTITUTE ENGLISH-VECTOR ALGEBRA-ASSIGNMENT (SECTION-B)
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  2. If a and b are position vectors of A and B respectively the position v...

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  3. The points with position vectors 60hati+3hatj,40hati-8hatj, ahati-52ha...

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  4. veca,vecb,vecc are three non-coplanar such that veca + vecb + vecc = a...

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  5. The position vector of three points are 2veca-vecb+3vecc, veca-2vecb+l...

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  6. Let a,b,c be three distinct positive real numbers. If vecp,vecq,vecr l...

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  7. Let veca and vecb are unit vectors inclined at an angle alpha to each ...

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  8. A unit vector in the xy-plane that makes an angle of pi/4 with the vec...

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  9. The vectors 2hati-lamdahatj+3lamdahatk and (1+lamda)hati-2lamdahatj+ha...

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  10. Let veca,vecb and vecc are three vectors such that |veca|=3, |vecb|=3,...

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  11. If veca=hati+hatj+hatk, vecb=4hati+3hatj+4hatk and vecc=hati+alphahatj...

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  12. veca=2hati-hatj+hatk,vecb=hatj+2hatj-hatk,vecc=hati+hatj -2 hatk . A v...

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  13. find the area of a parallelogram whose diagonals are veca=3hati+hatj-2...

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  14. If a and b are unit vectors, then the vector defined as V=(a+b)times(a...

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  15. Let veca=2hati+2hatj+hatk and vecc is a vector such that |vecaxxvecc|^...

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  16. ABCD is a quadrilateral with vec(AB) = veca, vec(AD) = vecb and vec(A...

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  17. A unit vector perpendicular to the plane passing through the points w...

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  18. If veca , vecb, vecc are the position vectors of the vertices. A,B,C ...

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  19. If vecpxxvecq=vecr and vecp.vecq=c, then vecq is

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  20. If veca = (hati + hatj +hatk), veca. vecb= 1 and vecaxxvecb = hatj -ha...

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