ONG PAN HAO GERALD's answer to Keline's Secondary 3 A Maths Singapore question.

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ONG PAN HAO GERALD
Ong Pan Hao Gerald's answer
9 answers (Tutor Details)
1st
The tough part is the point where the circle tangents to. If it tangents to either x or y axis, the centre has to be perpendicular to the tangent point. That gives one of the hidden coordinates for the centre of the circle.