Thread: circle help

pic 29 might have the question in it. but i also wrote it down.

29. Given: BC is tangent to circle A;

BC = 4, AC = 3

Find: BD

A. 2
B. 5
C. 7
D. 25

Originally Posted by dgenerationx2

pic 29 might have the question in it. but i also wrote it down.

29. Given: BC is tangent to circle A;

BC = 4, AC = 3

Find: BD

A. 2
B. 5
C. 7
D. 25

Triangle ABC is a right triangle. Use Pythagorean theorem to calculate the hypotenuse AB.

The distance BD = AB - AC.

Note that AC is the radius of the circle. I've got BD = 2