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 ( 44+ )
Otras preguntas
A mutation occurring in a human can be passed from parent to offspring when it occurs in a (1) lung cell, due to exposure to a toxic gas (2) gamete formed in th
Neeta bought 2 and 3/5 liter of milk from the market.To make it 3 liters, how much more does she need?
perfume evaporating is it a chemical change or physical change
in the above passage which of the following is another meaning for the word knocking
How does the absorption and release of energy affect temperature change during a chemical reaction?
Thousands dead after surprise attack; U.S. declares war on Japan. A headline like this would have likely been printed in a U.S. newspaper during what war?
Why is 40 days so important?
A meteorologist __________. a. makes maps b. plans city layouts c. surveys land for construction d. analyzes weather patterns and predicts weather events
How do you write 8/11 as decimal
people in sahel usually work in secondary industry wheres the mistake
