# How do you find the Tangent line to a curve by implicit differentiation?

##### 1 Answer

Sep 20, 2014

Let us this example:

Find the equation of the tangent line to the circle

Since the point is already provided, all you need is the slope

Let us find

By implicitly differentiating,

by dividing by

by subtracting

So, we can find

By Point-Slope Form:

Tangent Line: