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Perpendicular Lines and the equation of a tangent

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Question 6

A circle has the equation x2+y2=13x^2 + y^2 = 13x2+y2=13

a.

Write down the coordinates of the centre of the circle.

[1]
b.

Write down the exact length of the radius of the circle.

[1]
c.

P P\,P is the point (2,3)(2, 3)(2,3) on the circle x2+y2=13x^2 + y^2 = 13x2+y2=13

Work out the equation of the tangent to the circle at PPP.

[4]

Perpendicular Lines and the equation of a tangent Questions

  1. GCSE
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  3. /Perpendicular Lines and the equation of a tangent