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 ( 35+ )
Otras preguntas
Give an example of a linear equation in one variable with no solution. Explain how you know it has no solution.
How did the federal government regulate economy in the new deal?
Lillian says that 25% of a number will always be less than 75% of any other number. Complete one inequality to support Lillian's claim and one to show that she
in which of washingtons eight regions is mount St helens located
I'm so glad the air conditioner broke on a day where the temperature only hit 100 degrees. What is the verbal irony in this statement? Who wouldn't be glad to
When coal is burned, _____ energy is being converted to _____ energy. A. chemical; electrical B. heat; chemical C. electrical; heat D. chemical; hea
Why did people stop raising domesticated species?
What are some important dates in republic of Texas
What are the "common difficulties" that Rooselvelt adresses as the central idea of his speech Part A: A.Waging war against a foreign foe B. Dishonesty within th
Read the poem below and respond to the direction that follows. “Irony” by Louis Untermeyer Why are the things that have no death The ones with neither sigh
