1.  0

2.  1

3.  a-b

4.  none

4

a-b

Explanation :
No Explanation available for this question

# In ΔABC, if cos A cos B +sin A sin B sin C =1, then a:b:c =

1.  1:1:1

2.  1:2:√2

3.  1:2:2

4.  1:1:√2

4

1:1:√2

Explanation :
No Explanation available for this question

# If f: R→R defined by f(x)=x, if x>2 =5x-2, if x≤2, the nf is

1.  a function

2.  one one

3.  onto

4.  one one onto

4

onto

Explanation :
No Explanation available for this question

# If f: [0, π]→[-1, 1] defined by f(x)=cos x, then f is

1.  a function

2.  one one

3.  onto

4.  one one onto

4

one one onto

Explanation :
No Explanation available for this question

# If (0,1/2), (1/2,1/2), (1/2,0) are the midpoints of the sides of a triangle, then incentre of the triangle is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

1.  1

2.  -1

3.  1/2

4.  2

4

1/2

Explanation :
No Explanation available for this question

# In ΔABC, if sin A cos B =1/4 and 3tan A =tan B, the triangle is right angled at

1.  A

2.  B

3.  C

4.  not right angled

4

C

Explanation :
No Explanation available for this question

# If f: R→R defined by f(x)=2x+5, if x>0 =3x-2, if x≤0, then f is

1.  function

2.  one one

3.  onto

4.  one one onto

4

one one

Explanation :
No Explanation available for this question

1.  0

2.  ∞

3.  -∞

4.  1

4

1

Explanation :
No Explanation available for this question

1.  a function

2.  one one

3.  onto

4.  one one onto

4