# Tan (Cos-1 1/x) =sin (Cot-1 1/2), if x≠0 then x=

1.  ±3/5

2.  ±3/√5

3.  ±

4.  ± √3/5

4

±3/√5

Explanation :
No Explanation available for this question

# If Sin-1(2a/1+a2)+Sin-1(2b/1+b2)= 2Tan-1 x, then x=

1.  a+b/1-ab

2.  a-b/1+ab

3.  ab-1/a+b

4.  ab+1/a-b

4

a+b/1-ab

Explanation :
No Explanation available for this question

# If Tan-1(x-1/x-2)+ Cot-1 (x+2/x+1)=π/4, then x=

1.  1/√2

2.  ±1/√2

3.  ±1/√3

4.  1/√3

4

±1/√2

Explanation :
No Explanation available for this question

# If Tan-1(x+1/x-1)+Tan-1(x-1/x)+ Tan-1(1/3), then x=

1.  2

2.  -2

3.  1

4.  No solution

4

2

Explanation :
No Explanation available for this question

# If 3 Tan-1(1/2+√3)-Tan-1(1/x)= Tan-1(1/3),then x=

1.  2

2.  -2

3.  1

4.  No solution

4

2

Explanation :
No Explanation available for this question

# If Cot-1 4/3+Cot-1 5/3= Tan-1 k, then k=

1.  29/27

2.   -29/27

3.  27/11

4.  -27/29

4

27/11

Explanation :
No Explanation available for this question

# If cos-1 x= cot-1(4/3)+Tan-1(1/7), then x=

1.  1/2

2.  √3/2

3.  1/√2

4.  3/5

4

1/√2

Explanation :
No Explanation available for this question

# If ,then the value of k is

1.

2.

3.

4.  2x

4

Explanation :
No Explanation available for this question

# If sin-1 (3/5)+sin-1(5/13)= sin-1 x, then x=

1.  51/65

2.  52/65

3.  56/65

4.  none of these

4

56/65

Explanation :
No Explanation available for this question

1.  2

2.  1

3.  3

4.  none

4