If A+B+C = 3600 then cot A/4 +cot B/4+ cot C/4=

1.  sin A/4. Sin B/.sin C/4

2.  cos A/4.cos B/4. Cos C/4

3.  tan A/4.tanB/4. tan C/4

4.  cot A/4 cot B/4..cot C/4

4

cot A/4 cot B/4..cot C/4

Explanation :
No Explanation available for this question

If A+B+C = 7200 then tan A+ tan B+tan C=

1.  tan A tan B tanC

2.  tan 2A+ta 2B+ tan 2C

3.  tan 2A tan 2Btan 2C

4.  none

4

tan A tan B tanC

Explanation :
No Explanation available for this question

sin 2θ / (1+ cos 2θ) =

1.  sin θ

2.  cos θ

3.  tan θ

4.  cot θ

4

tan θ

Explanation :
No Explanation available for this question

(sin 3θ/ sin θ)-(cos 3θ/ cos θ)=

1.  2

2.  √3

3.  √2

4.  1

4

2

Explanation :
No Explanation available for this question

1.  2 sin θ

2.  2 cos θ

3.  2 tan 2θ

4.  2 cot 2θ

4

2 tan 2θ

Explanation :
No Explanation available for this question

(cos 3θ - sin 3θ)/ (cos θ+ sin θ)=

1.  1+ 2 sin 2θ

2.  1+ 2 sin 2θ

3.  1+ 2 cos 2θ

4.  1- 2 cos 2θ

4

1+ 2 sin 2θ

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  2

4.  3

4

3

Explanation :
No Explanation available for this question

(sin 2A/ sec A-1)(sec 2A/sc 2A+1)=

1.  sin A/2

2.  cos A/2

3.  tan A/2

4.  cot A/2

4

cot A/2

Explanation :
No Explanation available for this question

tan 3x / tanx=

1.  (2cos 2x+1)/(2cos 2x-1)

2.  (2sin 2x+1)/(2sin 2x-1)

3.  (2 cot 2x+1)/(2cot2x-1)

4.  (2 sec 2x+1)/ (2sec 2x-1)

4

(2cos 2x+1)/(2cos 2x-1)

Explanation :
No Explanation available for this question

1.  2

2.  √3

3.  √2

4.  1

4