Director Circle
Trending Questions
Q. The equation of director circle of the circle x2+y2=a2 is
- None of these
- x2+y2=4a2
- x2+y2=√2a2
- x2+y2−2a2=0
Q.
Find the equation of director circle of the circle (x−1)2+(y−2)2=4
Q. Find the radius of a circle from the equation: (x+2)2+(y−7)2=62.
- −6
- 36
- 6
- 35
Q. Find the centre and radius of each of the following circles.
(i) x2+y2=25
(ii) (x−5)2+(y−3)2=20
(iii) (x−12)2+(y+13)2=136
(i) x2+y2=25
(ii) (x−5)2+(y−3)2=20
(iii) (x−12)2+(y+13)2=136
Q.
Which of the following statements is/are correct?
1. The locus of the point of intersection of two perpendicular tangents is called director circle of the given circle.
2. The director circle of a circle is concentric circle.
3. The radius of director circle of a circle is equal to the radius of original circle.C
Only 1 & 2
Only 1
Only 1 & 3
All 1, 2 and 3
Q.
Find the equation of director circle of a circle whose equation is x2+y2−4x+6y+12=0