Maths · Circle, conic sections: A standard form of equations of a circle, the general form of the equation of a circle, its radius and centre

A perpendicular at the end of the radius of a circle is

A perpendicular at the end of the radius of a circle is

  • A. diameter
  • B. tangent
  • C. chord
  • D. anyline

Step-by-step solution

A line perpendicular to the radius at its endpoint on the circle is tangent to the circle by definition: the radius to the point of tangency is perpendicular to the tangent line.
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