NDA (National Defense Academy) Mathematics: Questions 69  76 of 384
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Question number: 69
» Differential Calculus » Algebraic Operations on Continuous Functions
Question
What is equal to?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  Question does not provide sufficient data or is vague 
Question number: 70
» Statistics and Probability » Definition of Probability
Appeared in Year: 2012
Question
Three Discs are thrown. What is the probability that the same number will appear on each of them?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 71
» Trigonometry » Angles and Their Measures in Degrees and in Radians
Question
If , then what is the value of ?
Choices
Choice (4)  Response  

a.  1  
b. 
 
c. 
 
d. 

Question number: 72
» 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: 73
» Algebra » Complex Numbers » Modulus
Question
If , then what is the imaginary part of equal to?
Choices
Choice (4)  Response  

a.  1  
b.  0  
c. 
 
d. 

Question number: 74
» Matrices and Determinants » Adjoint and Inverse of a Square Matrix
Appeared in Year: 2012
Question
If and then what is equal to?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 75
» 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 
Question number: 76
» Trigonometry » Trigonometric Identities Sum and Difference Formulae
Question
What is equal to? Where,
Choices
Choice (4)  Response  

a.  1  
b.  1.73  
c.  2.32  
d.  1.74 