  # How to find tangent line at a point

A tangent line would cross the circle at exactly one point. The red line needs to cut through the middle of the circle in order to determine the slope of the tangent line. Show Answer Return to Geometry Videos 780167 by  ## What do our customers say?

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## Finding the Equation of a Tangent Line

Enter the equation of a curve and coordinates of the point at which you want to find the tangent line. The tangent line calculator finds the equation of the tangent line to a given curve at a If you're looking for detailed, step-by-step answers, you've come to the right place. Our expert team is here to help you with all your questions. Instant Expert Tutoring

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## How to Find the Equation of a Tangent Line: 8 Steps

How to Find the Equation of a Tangent from an External Point Step 1. Differentiate the function. Step 2. Set the derivative at point a equal to the gradient between the external point and the ## Tangent Line Calculator

Step - 1: . If the y-coordinate of the point is NOT given, i.e., if the question says the tangent is

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## Tangent Line Calculator

Solution : Equation of the given curve is 9x2- 5y2 = 31 18 x - 10 y (dy/dx) = 0 10y (dy/dx) = -18 x dy/dx = -18x / 10 ==> -9x/5 Slope of tangent at the point (2, -1) m = -9 (2)/5 ==> -18/5 So, the

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