Circles Formulas for JEE 2026
15 formulas in Circles (Maths) How many can you recall?
Chord of contact from an external point
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Radical axis of two circles
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Radical axis of two circles
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Family of circles through line–circle intersection
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Family of circles through two circles’ intersections
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Power of a point
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Orthogonal circles
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Tangency of line y=mx+c to circle x²+y²=r²
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Standard equation of a circle
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General equation of a circle
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Parametric equations of a circle
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Family of circles
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Normal at a point on the circle
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Tangent at a point on the circle (T = 0)
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Length of tangent from a point to a circle
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