Question

AB is tangent to circle O at B. What is the length of the radius r? Round to the nearest tenth.
A. 1.7
B. 2.9
C. 6.1
D. 15.4

Answer 1

What type angle does a radius drawn to a tangent at the point of tangency make? @ehmuleeee

Answer 2

Ab0 is a right triangle

Answer 3

Pythagorean Theorem :3

Answer 4

(10^2+r^2)=(11.7)^2

Answer 5

r^2=136.89-100=36.89 --->r=6.07...

Answer 6

Let @ehmuleeee ask questions please

Answer 7

oh wow. thank you guys.

Answer 8

angle B=90 degree because tangent is perpendicular to radius