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Chapter: 12th Mathematics : UNIT 6 : Applications of Vector Algebra

Exercise 6.4: Application of Vectors to 3-Dimensional Geometry

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EXERCISE 6.4

1. Find the non-parametric form of vector equation and Cartesian equations of the straight line passing through the point with position vector 4iˆ + 3 ˆ- 7kˆ and parallel to the vector 2iˆ - 6 ˆ+ 7kˆ .


2. Find the parametric form of vector equation and Cartesian equations of the straight line passing through the point (-2, 3, 4) and parallel to the straight line 


3. Find the points where the straight line passes through (6, 7, 4) and (8, 4, 9) cuts the xz and yz planes.


4. Find the direction cosines of the straight line passing through the points (5, 6, 7) and (7, 9,13) . Also, find the parametric form of vector equation and Cartesian equations of the straight line passing through two given points.


5. Find the acute angle between the following lines.


(iii) 2= 3= -and 6= - = -4z


6. The vertices of ΔABC are A(7, 2,1), B(6, 0, 3) , and C(4, 2, 4) . Find ABC


7. If the straight line joining the points (2,1, 4) and (a -1, 4, -1) is parallel to the line joining the points (0, 2, -1) and (5, 3, -2) , find the values of and b .


8. If the straight lines  are perpendicular to each other, find the value of .


9. Show that the points (2, 3, 4),(-1, 4, 5) and (8,1, 2) are collinear.



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12th Mathematics : UNIT 6 : Applications of Vector Algebra : Exercise 6.4: Application of Vectors to 3-Dimensional Geometry | Problem Questions with Answer, Solution

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12th Mathematics : UNIT 6 : Applications of Vector Algebra


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