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 ( 32+ )
Otras preguntas
there were a total of one hundred sixty - eight soccer games in the season. The season is played for twelve months. How many soccer games were played each month
10.4% of what number is 13
what is the average of the scores 90 and 40??
How many ions are present in 30.0mL of 0.600M Na2CO3 solution?
which of the following choices best describes information given in a thesaurus
I have a square with an area that equals 184 cm^2. How do I find the side and put the answer in simplest radical form?
With governments becoming more complex, not only specialization but _______ developed.
an adult elephand drinks about 325 liters of water each day. is the number of days the water supply lasts proportional to number of liters of water the elephant
Which of the following is NOT an important physical property of matter? A. boiling point B. density C. volume D. melting point
If we were taking salinity readings from an area in an estuary where a river is flowing into the ocean water, we would find the freshest water at the surface. T
