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Equation of a Circle with Centre and Tangency Point
If the centre is $$(h,k)$$ and the point of tangency is $$(x_1,y_1)$$:
$$r^2=(x_1-h)^2+(y_1-k)^2$$
Usage
- Used to determine the radius when the centre and a point on the circle are known.
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Equation of a Circle with Centre and Tangency Point
If the centre is $$(h,k)$$ and the point of tangency is $$(x_1,y_1)$$:
$$r^2=(x_1-h)^2+(y_1-k)^2$$
Usage
- Used to determine the radius when the centre and a point on the circle are known.
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