# If θis the angle between the lines x/a+y/b=1, x/b+y/a=1 then cosθ=

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# If θ is the angle between the lines y=2x+3, y=x+1 then the value of tan θ =

1.  21/5

2.  1/3

3.   5/3

4.  -2

4

1/3

Explanation :
No Explanation available for this question

# The angle between the line joining the points (1, -2), (3, 2) and the line x+2y-7=0 is

1.  π

2.  π/2

3.  π/3

4.  π/6

4

π/2

Explanation :
No Explanation available for this question

# If the acute angle between the lines 4x-y+7=0, kx+5y-9=0 is 450 then the value of k is

1.  -3, 25/3

2.   1, -4

3.  2 or -1/2

4.  5 or 2/3

4

-3, 25/3

Explanation :
No Explanation available for this question

# If the acute angle between the lines 2x+3y-5=0, 5x+ky-6=0 is  then the value of k is

1.  1

2.   2

3.   -1

4.  -2

4

1

Explanation :
No Explanation available for this question

# If 2x+ky-10=0, 5x+2y-7=0 are parallel, then the value of k =

1.  4/3

2.  4/5

3.  5/3

4.  6

4

4/5

Explanation :
No Explanation available for this question

# If 3x-ky-2=0, 2x+y+2=0 are perpendicular, then the value of k =

1.  4/3

2.  4/5

3.  5/3

4.  6

4

6

Explanation :
No Explanation available for this question

# A line passing  through the points (a, 2a) and (-2, 3) is perpendicular to the line 4x+3y+5=0: then the value of a is

1.  18/5

2.  18

3.  5

4.  1

4

18/5

Explanation :
No Explanation available for this question

# The value of k such that the straight line (2x+3y+5)+k(x-7y+6)=0 is parallel to x- axis is

1.  21/5

2.  1/3

3.  5/3

4.   -2

4

-2

Explanation :
No Explanation available for this question

# The value of k such that line 3x+4y+5-k(x+y+3)=0 is parallel to y-axis is

1.  1

2.  2

3.  3

4.  4

4

4

Explanation :
No Explanation available for this question

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