NDA (National Defense Academy) Mathematics: Questions 298  305 of 384
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Question number: 298
» Trigonometry » Trigonometric Identities Sum and Difference Formulae
Question
What is the value of ?
Choices
Choice (4)  Response  

a.  3  
b. 
 
c. 
 
d.  1 
Question number: 299
» Matrices and Determinants » Adjoint and Inverse of a Square Matrix
Appeared in Year: 2016
Question
Which of the following are correct in respect of the system of equation
They have no solution, if
They have infinitely many solution, if
They have unique solution, if
Select the correct answer using the code given below:
Choices
Choice (4)  Response  

a.  1,2 and 3  
b.  1 and 2 only  
c.  2 and 3 only  
d.  1 and 3 only 
Passage
Let
Where,
Question number: 300 (1 of 3 Based on Passage) Show Passage
» Trigonometry » Trigonometric Identities Sum and Difference Formulae
Appeared in Year: 2012
Question
What is equal to?
Choices
Choice (4)  Response  

a.  2  
b.  1  
c. 
 
d.  0 
Question number: 301 (2 of 3 Based on Passage) Show Passage
» Trigonometry » Trigonometric Identities Sum and Difference Formulae
Appeared in Year: 2012
Question
What is equal to?
Choices
Choice (4)  Response  

a. 
 
b.  0  
c.  1  
d.  2 
Question number: 302 (3 of 3 Based on Passage) Show Passage
» Trigonometry » Trigonometric Identities Sum and Difference Formulae
Appeared in Year: 2012
Question
What is the value of ?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 303
» Matrices and Determinants » Operations on Matrices Determinant of a Matrix
Question
What is equal to?
Choices
Choice (4)  Response  

a.  0  
b. 
 
c. 
 
d. 

Question number: 304
» Algebra » Quadratic Equations with Real Coefficients
Question
If the difference between the roots of is then which one of the following is correct?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 305
» Matrices and Determinants » Adjoint and Inverse of a Square Matrix
Appeared in Year: 2012
Question
If is a square matrix such that where is the identity matrix, then what ia equal to?
Choices
Choice (4)  Response  

a.  A  
b. 
 
c.  Transpose of  
d.  Null matrix 