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If points hat i+ hat j , hat i- hat j a...

If points ` hat i+ hat j , hat i- hat j` and `p hat i+q hat j+r hat k` are collinear, then

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Prove that point hat i +2 hat j - 3 hat k ,2 hat i - hat j + hat k and 2 hat i + 5 hat j - hat k from a triangle in space.

Column I, Column II The possible value of vec a if vec r=( hat i+ hat j)+lambda( hat i+2 hat i- hat k) and vec r=( hat i+2 hat j)+mu(- hat i+ hat j+a hat k) are not consistent, where lambdaa n dmu are scalars, is, p. -4 The angel between vectors vec a=lambda hat i-3 hat j- hat ka n d vec b=2lambda hat i+lambda hat j- hat k is acute, whereas vecrtor vec b makes an obtuse angel with the axes of coordinates. Then lambda may be, q. -2 The possible value of a such that 2 hat i- hat j+ hat k , hat i+2 hat j+(1+a)k a n d3 hat i+a hat j+5 hat k are coplanar is, r. 2 If vec A=2 hat i+lambda hat j+3 hat k , vec B=2 hat i+lambda hat j+ hat k , vec C=3 hat i+ hat ja n d vec A+lambda vec B is perpendicular to vec C then |2lambda| is, s. 3

Prove that the four points 6 hat i-7 hat j ,16 hat i-19 hat j-4 hat k ,3 hat j-6 hat k and 2 hat i+5 hat j+10 hatk form a tetrahedron in space.

If the vectors x hat (i) - 4 hat (j) + 5 hat (k) , hat (i) + 2 hat (j) + hat (k) and2 hat (i) - hat (j) + hat (k) are coplanar , find the value x

If vectors vec a= hat i+2 hat j- hat k , vec b=2 hat i- hat j+ hat k and vec c=lambda hat i+ hat j+2 hat k are coplanar, then find the value of (lambda-4) .

Find the value of lambda for which the three points with position vector 3 hat i-2 hat j- hat k ,2 hat i+3 hat j-4 hat k , and4 hat i+5 hat j+lambda hat k are coplanar.

The number of distinct real values of lambda , for which the vectors -lambda^2 hat i+ hat j+k , hat i-lambda^2 hat j+ hat ka n d hat i+ hat j-lambda^2 hat k are coplanar is a. zero b. one c. two d. three

find the projection of 3hat i - hat j + 4hat k on 2 hat i + 3 hat j -6 hat k

If the vectors ahat (i) + a hat (j) + c hat (k) , hat (i) + hat (k) and c hat (i) + c hat (j) + b hat (k) be coplanar, show that c^(2) = ab

The dot products of a vector with the vectors hat (i) - 3 hat(k) , hat (i) - 2hat (k) and hat (i) + hat (j)+ 4 hat (j) are 0,5,8 respectively . Find the vector .

CENGAGE PUBLICATION-VECTOR ALGEBRA-All Questions
  1. The sides of a parallelogram are 2 hat i+4 hat j-5 hat k and hat i+2 ...

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  2. If vec a , vec b , vec c are non-coplanar vector and lambda is a re...

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  3. If points hat i+ hat j , hat i- hat j and p hat i+q hat j+r hat k are...

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  4. If the vectors hat i- hat j , hat j+ hat k and vec a form a triangl...

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  5. If the resultant of three forces vec F1=p hat i+3 hat j- hat k , v...

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  6. If vec a, vec b, vec c are unit vectors satisfying the condition veca+...

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  7. The vector hat i+x hat j+3 hat k is rotated through an angle theta an...

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  8. Prove that point hat i +2 hat j - 3 hat k ,2 hat i - hat j + hat k ...

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  9. Show that the point A , B and C with position vectors vec a =3 hat i ...

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  10. If 2vec(AC)=3vec(CB), then prove that 2vec(OA)+3vec(OB)=5vec(OC) where...

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  11. Find the unit vector in the direction of vector vec (PQ), where P and...

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  12. For given vector, vec a = 2 hat i j +2 hat k and vec b = - hat i + ...

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  13. If the projections of vector vec a on x -, y - and z -axes are 2, ...

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  14. Find a vector in the direction of the vector 5 hat i - hat j + 2 h...

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  15. If vec a , vec b , vec c , vec d are the position vector of point A ,...

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  16. Show that the points A(6,-7,0),B(16 ,-19 ,-4),C(0,3,-6) and D(2,-5,10)...

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  17. Statement 1: The direction cosines of one of the angular bisectors ...

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  18. Statement 1: In DeltaA B C , vec (A B)+ vec (BC)+ vec (C A)=0 State...

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  19. If vec aa n d vec b are two vectors of magnitude 1 inclined at 120^0 ...

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  20. vec A isa vector with direction cosines cosalpha,cosbetaa n dcosgammad...

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