A tangent to a circle at point P is a straight line that touches the circle at P. The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a ...
A tangent to a circle at point P is a straight line that touches the circle at P. The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a ...
A circle is defined to be all the points a given distance from the given centre point. The equation of a circle with radius $r$ and centred at the origin $(0,0)$ is ...
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