# In ΔABC, if ==

1.  23/15

2.  23/16

3.  23/14

4.  none

4

23/16

Explanation :
No Explanation available for this question

1.  x/2

2.  x/3

3.   x

4.  0

4

x/2

Explanation :
No Explanation available for this question

# In ΔABC, if a:b:c = 3:4:5, then sin A :sin B:sin C=

1.  3:4:5

2.  9:16:25

3.  9: 8:7

4.  7: 9:8

4

3:4:5

Explanation :
No Explanation available for this question

# In ΔABC, if a:b:c = 7:8:9, then cos A: cos B:cos C =

1.  7:9:11

2.  14:11:6

3.  7:19: 25

4.  8:6:5

4

14:11:6

Explanation :
No Explanation available for this question

1.  x/2

2.  x/3

3.  x/6

4.  0

4

x/3

Explanation :
No Explanation available for this question

# The eccentricity of the hyperbola x= t+1/t), y=  (t-1/t) is

1.  √3

2.  √2

3.  2√3

4.  3√2

4

√2

Explanation :
No Explanation available for this question

# In ΔABC, if b+c : c+a : a+b =11:12:13, then cos A:cos B:cos C =

1.  7:9:11

2.  14:11:16

3.  1:19:25

4.  8:6:5

4

1:19:25

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  -1

4.   none

4

-1

Explanation :
No Explanation available for this question

# In ΔABC, if cos A =17/22, cos C=1/14, then a:b:c =

1.  7:9:11

2.  14:11:16

3.  1:19:25

4.  8:6:5

4

7:9:11

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  2

4.  3

4