Grade 11Analytical Geometry
find the equation of the circle of radius 15 passes through origin and the cemtre lies on y=2x
find the equation of the circle of radius 15 passes through origin and the cemtre lies on y=2x
1 Answer
Arun
Dear Akash
Let the centre (h, 2h)
Now
If it passes thriugh origin hence distance of centre to origin should be equal to radius.
5h² = 225
h² = 45
h = 3 
5
Hence centre = (35, 65)
Now you can easily find the equation of circle.
Regards
Arun (askIITians forum expert)
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