# If B is the image of A = (1,2) about the line x-y+5 = 0,then AB

1.  √2

2.  4√2

3.  8√2

4.  2√2

4

8√2

Explanation :
No Explanation available for this question

# The lines 2x+3y = 6,2x+3y = 8 cut the x-axis at A,B respectively.A line L=0 drawn,through the point(2,2) meets the x-axis at C in such a way that abscissa of A,B and C are in the arithmetic progression.Then the equation of L=0 is

1.  2x+3y=10

2.  3x+2y=10

3.  3x-2y=2

4.  2x+y=6

4

2x+3y=10

Explanation :
No Explanation available for this question

# The quadrilateral formed by the pairs of lines 2x2+5xy+2y2=0,2x2+5xy+2y2-15x-15y+25 = 0 is

1.  parallelogram

2.  rhombus

3.  rectangle

4.  square

4

rhombus

Explanation :
No Explanation available for this question

# If z1=1+2i,z2=2+3i,z3=3+4i,then z1,z2 and z3 represents

1.  equilateral triangle

2.  right angled triangle

3.  isosceles triangle

4.  collinear points

4

isosceles triangle

Explanation :
No Explanation available for this question

# If α+iβ = tan-1z,z=x+iy and α is constant then,the locus of z is

1.  x2+y2+2xsinα = 1

2.  x2+y2+2ytan2α = 1

3.  cot2α(x2+y2)=1+x

4.  x2+y2+2x+cot2α = 1

4

x2+y2+2x+cot2α = 1

Explanation :
No Explanation available for this question

# The angle between the tangents from the origin to the circle (x-7)2+(y+1)2 = 25 is

1.  π/3

2.  π/6

3.  π/2

4.  π/8

4

π/2

Explanation :
No Explanation available for this question

# If the circle x2+y2+6x+8y+a = 0 bisects the circumference of the circle x2+y2+2x-6y-b=0,then a+b is equal to

1.  38

2.  -38

3.  42

4.  28

4

-38

Explanation :
No Explanation available for this question

# The sum of the series

1.  logex

2.  2logex

3.  –loge(x+1)

4.  3logex

4

logex

Explanation :
No Explanation available for this question

1.  log(8/e)

2.  log(e/8)

3.  log8e

4.  log4e

4

log(8/e)

Explanation :
No Explanation available for this question

1.  a =25,b = -8

2.  a = 25,b = 8

3.  a= 5,b = 5

4.  a = 4,b = 5

4