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Find the position vector of the mid-poin...

Find the position vector of the mid-point of the vector joining the points `P(2 hat i-3 hat j+4 hat k"")a n d"Q"(4 hat i+ hat j-2 hat k)dot`

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Find the cosine of the angle between the vectors 4 hat i-3 hat j+3 hat k\ a n d\ 2 hat i- hat j- hat kdot

Show that the vectors 2 hat i-3 hat j+4 hat k\ a n d-4 hat i+6 hat j-8 hat k are collinear.

Write the position vector of a point dividing the line segment joining points having position vectors hat i+ hat j-2 hat k\ a n d\ 2 hat i- hat j+3 hat k externally in the ratio 2:3.

Find the vector equation of the plane passing through three points with position vectors hat i+ hat j-2hatk, 2hat i-\ hat j+ hat k and hat i+2 hat j+ hat kdot Also find the coordinates of the point of intersection of this plane and the line vec r=3 hat i-\ hat j- hat k+lambda(2 hat i-\ 2 hat j+ hat k)dot

Find the vector equation of the plane passing through three points with position vectors hat i+ hat j-2hatk, 2hat i-\ hat j+ hat k and hat i+2 hat j+ hat kdot Also find the coordinates of the point of intersection of this plane and the line vec r=3 hat i-\ hat j- hat k+lambda(2 hat i-\ 2 hat j+ hat k)dot

Find a unit vector perpendicular to both the vectors 4 hat i- hat j+3 hat k\ a n d-2 hat i+ hat j-2 hat kdot

Find a unit vector in the direction of the resultant of the vectors hat i- hat j+3 hat k ,""2 hat i+ hat j-2 hat k"and"3 hat i +2 hat j-2 hat k""dot

The position vectors of the points Pa n dQ with respect to the origin O are vec a= hat i+3 hat j-2 hat k and vec b=3 hat i- hat j-2 hat k , respectively. If M is a point on P Q , such that O M is the bisector of angleP O Q , then vec O M is a. 2( hat i- hat j+ hat k) b. 2 hat i+ hat j-2 hat k c. 2(- hat i+ hat j- hat k) d. 2( hat i+ hat j+ hat k)

Find the unit vector in the direction of the sum of the vectors 2 hat i+3 hat j- hat k and 4 hat i-3 hat j+2 hat kdot

Find the position vector of a point R which divides the line joining two points P and Q whose position vectors are hat i+2 hat j- hat k and - hat i+ hat j+ hat k respectively, in the ratio 2 : 1(i) internally (ii) externally

RD SHARMA ENGLISH-ALGEBRA OF VECTORS-All Questions
  1. A B C D is a parallelogram. If L and M are the mid-points of B C and D...

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  2. Find a unit vector in the direction of the resultant of the vectors...

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  3. Find the position vector of the mid-point of the vector joining the...

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  4. Show that the line joining one vertex of a parallelogram to the mid...

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  5. Let vec a , vec b, vec c be three non-zero vectors such that any two ...

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  6. If vec a , vec b are the position vectors of the points (1,-1),(-2,m...

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  7. Find the position vector of a point A in space such that vec O A is i...

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  8. Show that the points A(6,-7,0),B(16 ,-19 ,-4),C(0,3,-6)a n d D(2,-5,1...

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  9. Prove that the lines joining the vertices of a tetrahedron to the ce...

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  10. Find a vector vec r of magnitude 3sqrt(2)u n i t s which makes an an...

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  11. Let vec a= hat i+2 hat ja n d vec b=2 hat i+ hat jdoti s |vec a|=| ve...

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  12. Three vectors of magnitude a ,2a ,3a meet in a point and their directi...

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  13. Show that the vectors vec a-2 vec b+3 vec c , vec a-3 vec b+5 vec ca ...

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  14. Find the angles at which the vector 2 hat i- hat j+2 hat k is inclined...

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  15. Prove that four points 2 vec a+3 vec b- vec c , vec a-2 vec b+3 vec ...

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  16. Find the direction cosines of the vector joining the points A(1,2,-...

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  17. If vec aa n d vec b are two non-collinear vectors, show that points...

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  18. If the position vector vec a of a point (12 ,n) is such that | vec a|...

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  19. If A=(0,1)B=(1,0),C=(1,2),D=(2,1) , prove that vec A B= vec C Ddot

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  20. Show that the points with position vectors vec a-2 vec b+3 vec c ,-2 ...

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