CBSE Class 11-science Answered
What is the equation of a Circle with Origin as center and passing through the vertices of an equilateral triangle of altitude 3a.
Asked by Malavika Umesh | 30 Apr, 2015, 10:41: PM
Expert Answer
Equation of any circle with center at origin and radius 'r' is
If the altitude of an equilateral triangle is 3a, then its centroid/circumcenter will divide the altitude in 2:1 ratio and the longer part will be the radius of the circumcircle passing through the vertices.
Hence, radius of the circle 'r' is 2a.
Hence, equation of the circle is
Answered by satyajit samal | 02 May, 2015, 01:14: PM
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