there are so many formulas in chapter circles. for ex. formula of chord of contact,power of a point, equation of a pair of tangents etc. could u tell me how to drive these formulas so that it is easier for me to remember them

Dear Himanshu,

As i already told you do written practise as much as possible

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hi himanshu,

            interest in deriving formulas tells thet u r best fit for iit.tell the formulas u need to derive.