### Home > A2C > Chapter Ch11 > Lesson 11.2.5 > Problem 11-100

11-100.

Find the equation of the line tangent to the circle

*x*^{2}+*y*^{2}= 25 at each of the following points. Homework Help ✎(5, 0)

(3, 4)

Find the equation of the line from the center of the circle to this point.

*y* = 0

Now find the equation of the line that is perpendicular to this line that passes through this point.

*x* = 5

See part (a) for the method.