Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

Circle
Asked by thebluebloo | 16 Dec, 2008, 03:13: PM
answered-by-expert Expert Answer

as from general eqn of cicle x2 +y2 +2gx +2fy +c =0   center (-g,-f) radius = (g2+ f2 -c)                                                                    intercept on x axis = 2(g2-c) ; intercept on y axis = 2(f2-c)

an intercept of 8 units===>2(g2-c) =8..........(1)

As circles touching y-axis at (0,3) so y co-ordinate of the center is 3===> - f = -3 ===>f=3;                                         and  intercept on y axis = 0 ===>f2=c.==> c = 9

so by solving 1 we get g,f,c as  (-5 , 3 , 9)respectively .putting in general eqn. we get required eqn.

x2 +y2 - 10x + 6y +9 = 0

Answered by | 16 Dec, 2008, 08:16: PM
CBSE 11-science - Maths
Asked by ashwinikumar59 | 02 May, 2010, 08:08: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Sonal13 | 01 May, 2010, 12:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Sonal13 | 01 May, 2010, 12:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by ashwinikumar59 | 30 Apr, 2010, 03:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by ashwinikumar59 | 29 Apr, 2010, 07:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Vishnusasidharan | 05 Apr, 2010, 08:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by satyakitopper | 21 Mar, 2010, 11:57: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by sahare | 10 Feb, 2010, 06:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by devendra.mittal | 05 Jan, 2010, 10:08: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by devendra.mittal | 05 Jan, 2010, 10:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×