If sin A=sinB and cosA=cosB,then

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

The value of sin[(1/2)cot-1(3/4)] is equal to

1.  -1/√5

2.  1/√5

3.  -2/√5

4.  2/√5

View Answer  
4
Correct Answer :

2/√5


Explanation :
No Explanation available for this question

If y=tanh-1x then log[(1+x)/(1-x)]

1.  2y

2.  4y

3.  6y

4.  none of these

View Answer  
4
Correct Answer :

2y


Explanation :
No Explanation available for this question

In ΔABC,sinB/sin(A+B)

1.  b/a+b

2.  b/c

3.  c/b

4.  a2+b2

View Answer  
4
Correct Answer :

b/c


Explanation :
No Explanation available for this question

If α1, α2, α3, α4 are the roots of the equation 3x4-(l+m)x3+2x+5l=0 and ∑ α1=3 and α1 α

1.  (6,3)

2.  (-6,-3)

3.  (-9,-1)

4.  (9,1)

View Answer  
4
Correct Answer :

(6,3)


Explanation :
No Explanation available for this question

If 7x4+kx-9=0 and S3=-8 then k=

1.  -56

2.  56

3.  -28

4.  28

View Answer  
4
Correct Answer :

56


Explanation :
No Explanation available for this question

If α,β,γ are the roots of x3+ax2+bx+c=0 then π(α+β-2γ)=

1.  2a3+9ab-27c

2.  2a3-9ab-27c

3.  2a3+9ab+27c

4.  2a3-9ab+27c

View Answer  
4
Correct Answer :

2a3-9ab+27c


Explanation :
No Explanation available for this question

If 1,2,3 and 4 are the roots of the equation x4+ax3+bx2+cx+d=0 then a+2b+c=

1.  24

2.  10

3.  0

4.  -25

View Answer  
4
Correct Answer :

10


Explanation :
No Explanation available for this question

If the roots of x3-9x2+23x-15=0 are in A.P then the common difference in A.P. is

1.  ±2

2.  ±3

3.  ±4

4.  ±5

View Answer  
4
Correct Answer :

±2


Explanation :
No Explanation available for this question

The condition that the roots of ax3+bx2+cx+d=0 may be in G.P.If

1.  a3b=cd2

2.  ac3=b3d

3.  a3c=bd3

4.  ab3=c2d

View Answer  
4
Correct Answer :

ac3=b3d


Explanation :
No Explanation available for this question
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