A. x-y-2=0, x+2y+4=0
B. 3x+3y+2=0, x+2y+4=0
C. x-y-2=0, x+2y-4=0
D. -3x+3y+2=0, x-2y+4=0
A rectangle ABCD is inscribed in a circle with a diameter lying along the line 3y=x+10. If A=(-6, 7), B=(4, 7) then the area of the rectangle is
The equation to the circle touching the y-axis at the origin and passing through(b, c) is
The line y=x+a√2 touches the circle x2+y2=a2 at P. The coordinates of P are
Equation of the tangent to the circle x2+y2=3, which is include at 600 with the x-axis is
The centre of the incircle of the triangle formed by the line 3x+4y=24 with the axes is
The equation of the circle which cuts orthogonally the three circles x2+y2+2x+17y+4=0, x2+y2+7x+6y+11=0 , x2+y2-x+22y+3=0 is
If a chord of the circle x2+y2=8 makes equal intercepts of length a on the coordinate axes, then |a|<
I:The equation whose roots are the squares of the roots of x3-x2+8x-6=0 is x3+15x2+52x+36=0
II:The equation whose roots are the cubes of the roots x3+3x2+2=0 is x3+33x2+12x+8=0
If the circles x2+y2+2ax+4ay-3a2=0 and x2+y2-8ax-6ay+7a2=0 touch each other externally, the point of contact is
The equation of the circle whose centre lies in the first quadrant and which touches the coordinate axes and the line (x/3)+(y/4)=1 is x2+y2-2cx-2cy+c2=0, then c=