1. √5
2. √5 / 3
3. 1
4. 2 /3
√5 / 3
1. log tan ( θ/2 )
2. log sin ( θ/2 )
3. log cos ( θ/2 )
4. log cot ( θ/2 )
log cot ( θ/2 )<br>
1. (√3-l) : 1
2. √3:√2
3. 1 : √3
4. √3: 1
1 : √3
1. 2c cot (C/2)
2. 2a cot (A/2)
3. 2b cot (B/2)
4. tan (C/2)
2c cot (C/2)
1. Both I and II are true
2. I is true II is false
3. I is false II is true
4. Both I and II are false
Both I and II are true
1. d tan α
2. d cot β
3. d / (cot α + cot β)
4. d / (cot α - cot β)
d / (cot α - cot β)
1. 2
2. 4
3. 6
4. 8
4
1. 2:1
2. 2:3
3. 3:4
4. 1:4
2:1
1. 0
2. 2
3. 12
4. -1
2
1. 4
2. 2/3
3. 1/6
4. 1/3
2/3