If  (1-tan 20 cot220)/(tan 1520- cot 880)= k√3, then value of k is

1.  1

2.   -1

3.  1/2

4.  -1/2

4

-1

Explanation :
No Explanation available for this question

(1+ tan 320)(1+ tan130)/ (1+tan 230)(1+ tan220)=

1.  1

2.  2

3.  3

4.  4

4

1

Explanation :
No Explanation available for this question

The value of (tan 800- tan100)/ (tan 700) =

1.  2

2.  -2

3.  3

4.  -4

4

2

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  2

4.  1/2

4

2

Explanation :
No Explanation available for this question

If sin(θ+ α)= cos (θ+ α), then tan θ=

1.  (1+ tan α) / (1-tan α)

2.  (1+ tan α) / (1+tan α)

3.  (tan α) / (1+tan α)

4.  tan α / (1-tan α)

4

(1+ tan α) / (1+tan α)

Explanation :
No Explanation available for this question

If cos  α+ cos β=0= sin α + sin β then cos(α - β)=

1.  0

2.  1

3.  -1

4.  2

4

-1

Explanation :
No Explanation available for this question

If tan(A+B)=m,tan(A-B)= n,then tan 2A=

1.  (m+n)/(1-mn)

2.  (m-n)/(1-mn)

3.  (m+n)/ (1+mn)

4.   (m-n)/(1+mn)

4

(m+n)/(1-mn)

Explanation :
No Explanation available for this question

If tan(A+B)=p, tan(A-B)=q, then cot 2B=

1.  (1+pq)/(p-q)

2.  (1+pq)/(p+q)

3.  (1-pq)/(p-q)

4.  (1-pq)/(p+q)

4

(1+pq)/(p-q)

Explanation :
No Explanation available for this question

If tan A=18/17, tan B= 1/35 then tan(A-B)=

1.  0

2.  1

3.  -1

4.  2

4

1

Explanation :
No Explanation available for this question

1.  6

2.  4

3.  7

4.  5

4