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The angle between the line vecr=(5hati-h...

The angle between the line `vecr=(5hati-hatj-4hatk)+lambda(2hati-hatj+hatk)` and the plane `barr.(3hati-4hatj-hatk)+5=0` is `sin^(-1)((5)/(2sqrt(91)))`.

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Show that the line vecr=hati+hatj+lambda(2hati+hatj+4hatk) lies in the plane vecr.(hati+2hatj-hatk)=3

Find the angle between the vectors 2hati-hatj+hatk and 3hati+4hatj-hatk .

Find the angle between the vector 2hati-3hatj+hatk and hati+hatj-2hatk .

Find the distance of the point (-1, -5, -10) from the point of intersection of the line vecr=2hati-hatj+2hatk+lambda(3hati+4hatj+2hatk) and the plane vecr.(hati-hatj+hatk)=5

Find the shortest distance between the lines vecr=(hati+2hatj+hatk)+lambda(hati-hatj+hatk) and vecr=2hati-hatj-hatk+mu(2hati+hatj+2hatk) .

The angle between the two vectors vecA=3hati+4hatj+5hatk and vecB=3hati+4hatj-5hatk will be :

Find the shortest distance between the lines vecr=(4hati-hatj)+lambda(hati+2hatj-3hatk) and vecr=(hati-hatj+2hatk)+mu(2hati+4hatj-5hatk) .

Find the angle between the planes whose vector equations are vecr.(2hati+2hatj-3hatk)=5 and vecr.(3hati-3hatj+5hatk)=3 .

Find the shortest distance between lines vecr=6hati+2hatj+2hatk+lambda (hati-2hatj+2hatk) and vecr=-4hati-hatk+mu(3hati-2hatj-2hatk).

KUMAR PRAKASHAN-THREE DIMENSIONAL GEOMETRY-SOLUTION OF NCERT EXAMPLAR PROBLEMS (Short Answer Type Question)
  1. If the directions cosines of a line are k, k and k then ..........

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  2. The distance of the plane barr.(2/7i+3/7j-6/7k)=1 from the origin is …...

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  3. The sine of the angle between the straight line (x-2)/(3)=(y-3)/(4)=(z...

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  4. The reflection of the point (alpha,beta,gamma) in the xy - plane is .....

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  5. The area of the quadrilateral ABCD, where A(0, 4, 1), B(2, 3, -1), C(4...

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  6. The locus represented by xy + yz = 0 is .........

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  7. The plane 2x – 3y + 6z - 11 = 0 makes an angle sin^(-1)alpha with X- a...

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  8. A plane passes through the points (2, 0, 0) (0,3,0) and (0, 0, 4). The...

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  9. The direction cosines of the vector 2bari + 2barj - bark are ............

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  10. The cartesian equation of a line is (x-5)/(3)=(y+4)/(7)=(z-6)/(2).Writ...

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  11. The vector equation of the line through the points (3, 4, -7) and (1, ...

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  12. The cartesian equation of the plane barr.(bari+barj-bark)=2 is...........

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  13. The unit vector normal to the plane x + 2y + 3z - 6 = 0 is (1)/(sqrt(1...

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  14. The intercepts made by the plane 2x - 3y + 5z + 4 = 0 on the co-ordina...

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  15. The angle between the line vecr=(5hati-hatj-4hatk)+lambda(2hati-hatj+h...

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  16. The angle between the planes barr.(2bari-3barj+bark)=1 and barr.(i-j)=...

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  17. The line barr = 2bari - 3barj - bark + lambda (bari - barj + 2bark) li...

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  18. The cartesian equation of a line is (x-5)/(3)=(y+4)/(7)=(z-6)/(2).Writ...

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  19. The equation of a line, which is parallel to 2bari + barj + 3bark and ...

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  20. If the foot of perpendicular drawn from the origin to a plane is (5, -...

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