Analytical Geometry of Two and Three Dimensions (NDA (National Defence Academy) Mathematics): Questions 7  12 of 30
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Question number: 7
» Analytical Geometry of Two and Three Dimensions » Rectangular Cartesian Coordinate System
Question
What is perimeter of the triangle with vertices and ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 8
» Analytical Geometry of Two and Three Dimensions » Direction Cosines and Direction Ratios
Question
What is the cosine of angle between the planes and
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 9
» Analytical Geometry of Two and Three Dimensions » Angle between Two Lines
Question
Out of points in a plane, points are in the same straight line, triangles can be formed by joining these points. What is the value of
Choices
Choice (4)  Response  

a.  4 

b.  3 

c.  6 

d.  5 

Question number: 10
» Analytical Geometry of Two and Three Dimensions » Distance of a Point from a Line
Question
Two poles are and high. The line joining their tips makes an angle of with the horizontal. What is the distance between the poles?
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 11
» Analytical Geometry of Two and Three Dimensions » Equation of a Line in Various Forms
Question
What is the sum of the squares of direction cosines of the line joining the points ?
Choices
Choice (4)  Response  

a. 


b.  1 

c.  0 

d. 


Question number: 12
» Analytical Geometry of Two and Three Dimensions » Distance of a Point from a Line
Question
The angle of elevation of a tower at a level ground is . The angle of elevation becomes . when moved towards the tower. If the height of tower is , then what is equal to?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  Question does not provide sufficient data or is vague 
