1.  0

2.  1

3.  2

4.  1/2

4

0

Explanation :
No Explanation available for this question

# tan 200+ tan 400+√3 tan 200. tan 400=

1.  1

2.  1/√3

3.  √3

4.  0

4

√3

Explanation :
No Explanation available for this question

# tan 750- tan 300- tan 750. tan 300=

1.  1

2.  1/√3

3.  √3

4.  0

4

1

Explanation :
No Explanation available for this question

# If tan 690+ tan 660- tan 690 tan 660= 2k, then the values of k is

1.  -1

2.  1/2

3.  -1/2

4.  none

4

-1/2

Explanation :
No Explanation available for this question

# tan A cot(A/2)-1=

1.  cos A

2.  sin A

3.  sec A

4.  cosec A

4

sec A

Explanation :
No Explanation available for this question

# cos2(A-B)+ cos2 B- 2cos(A-B)cos A cos B=

1.  sin2A

2.  sin2B

3.  cos2 A

4.  cos2 B

4

sin2A

Explanation :
No Explanation available for this question

# sin2 α+ cos2 (α + β)+ 2 sin α sin β. cos(α + β) =

1.  sin2 α

2.  sin2 β

3.  cos2 α

4.  cos2 β

4

cos2 β

Explanation :
No Explanation available for this question

# (cos 150+ sin 150)/ (cos 150 –sin 150)=

1.  1

2.  √3

3.  1/√3

4.  2+√3

4

√3

Explanation :
No Explanation available for this question

# (tan(450+ α)+ tan(450- α))/ (cot(450+ α)+ cot(450- α))=

1.  1

2.  2

3.  3

4.  4

4

1

Explanation :
No Explanation available for this question

1.  2

2.  -1

3.  1

4.  0

4