### Home > PCT > Chapter Ch9 > Lesson 9.2.1 > Problem 9-73

9-73.

Find the equation of the line tangent to the circle *x*^{2} + *y*^{2} = 25 at the point (3, 4). Homework Help ✎

The radius is perpendicular to the tangent line. Find the slope of the radius to help find the slope of the tangent line.

Use the given point and *m*_{tangent} to find the equation.