glittr's answer to Candice's Secondary 4 A Maths Singapore question.

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glittr
Glittr's answer
59 answers (Tutor Details)
ii
create circle

the radius value is actually the y coordinate of the centre becos of the location of the centre

sub in Point A or Point B into circle eqn becos A and B are found on the circle . subbing allows us to find unknown