Tangent Line

Let be a point on the circle (see figure).

(a) What is the slope of the line joining P and O (0, 0)?

(b) Find an equation of the tangent line to the circle at P

(c) Let Q(x, y) be another point on the circle in the fourth quadrant. Find the slope m, of the line joining P and Q in terms of x.

(d) Calculate How does this number relate to your answer in part (b)?

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Joram GuingguingLv10

1 Jul 2020

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(b) Find an equation of the tangent line to the circle at P.

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