A-Math - Coordinate Geometry - Find the Equation of a Circle given Two Points and a Line.

A-Math - Coordinate Geometry - Find the Equation

 of a Circle given Two Points and a Line.

Topic: Coordinate Geometry

In most Coordinate Geometry problems, it is useful to sketch the graphs as
it provides visual clues on how to solve the problem.

All points on the circumference to the center of circle O is equal. The length
form the radius of the circle. In step 2 and 3, I use the formula\(\sqrt {{{({x_1} - {x_2})}^2} + {{({y_1} - {y_2})}^2}} \)
to find the length between A and O.

In step 4, I use the standard form to express the equation i.e \({(x - a)^2} + {(y - b)^2} = {r^2}\) 

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About Unknown

I created this Blog after my students told me that there is very little information about how to solve GCE O Level Math and Additional Math (A-Math) questions on the internet. Even if they manage to find, the solution were for very basic questions. I am a Full-time Math Tutor in Singapore. I tutor mainly in Northern Singapore (Woodlands, Chua Chu Kang, Bukit Panjang, Yishun and Sembawang). I also tutor in Johor Bahru.