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So the exam is tomorrow but I can't afford a calculator. Do I really need one? Most of the mathematics in the course does not require a calculator as they are proof based/involve pronumerals rather than actual numbers. For example, graphing would not require much use of a calculator, and conics...

Hello, I keep getting stuck on this question. It gets a bit messy. I already did part (a) - the point A (and hence B,C,D) all lie on the circle given... just parts b, c, d I need.