gena19
gena19
22-04-2017
Mathematics
contestada
AB is tangent to C. I need to find the value of r.
Respuesta :
kettboy
kettboy
22-04-2017
Tangent always meets radius at 90° angle.
Angle ABC = 90° so Pythagoras' theorem applies.
r² + 4² = (r+2)²
r² + 16 = r² + 4r + 4
12 = 4r
r = 3
Answer Link
VER TODAS LAS RESPUESTAS ( 17+ )
Otras preguntas
Why are earths tectonic plates continually moving?
In 2000, the U.S. population was over 300 million. True or False.
What are 3 effects that make climate change positive
A line has a y-intercept at (0, 4) and an x- intercept at (6, 0). What is the slope of the line?A) -2/3B) 3/2C) -3/2D) 2/3(P.S There is no graph for this questi
What do you get when you mix lemons with gunpowder
Do all animals have the same life span? Explain your answer
Brandon continuously flaunted his good luck in front of his sister by bragging as he handed her a tissue for her watery eyes and stuffy nose. a. example b. anto
How many unit cubes will fit in the rectangular prism? A) 13 B) 27 C) 81 D) 243
Weight 1 = 150 lb Weight 2 = 300 lb. d1 = 15 ft. d2 = ____ feet. A) 15 B) 7.5 C) 30
Which statement most clearly links the evidence and conclusion for an argument about the socially damaging effects of social networks? A) Unless social network
