astro855 astro855
  • 22-05-2023
  • Mathematics
contestada

The centre of a circle is the point with coordinates (-1, 2)
The point A with coordinates (5, 9) lies on the circle.
Find an equation of the tangent to the circle at A.
Give your answer in the form ax + by + c = 0 where a, b and c are integers.

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