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Mathematics 7 Online
OpenStudy (highschoolmom2010):

Find the value of each variable. For each circle, the dot represents the center.

OpenStudy (highschoolmom2010):

OpenStudy (highschoolmom2010):

it wouldnt let me open the other one XD

OpenStudy (jdoe0001):

did you ever get "a"? do you recall the inscribed angle theorem?

OpenStudy (highschoolmom2010):

it is 1/2 the arc

OpenStudy (highschoolmom2010):

i thought it was 168

OpenStudy (jdoe0001):

168 is the arc on the opposite side of a+b

OpenStudy (highschoolmom2010):

yea

OpenStudy (highschoolmom2010):

im still kinda confused

OpenStudy (jdoe0001):

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OpenStudy (jdoe0001):

so the whole section, of say a+b, that arc is 360 - 192 = 168 = "c"

OpenStudy (highschoolmom2010):

so c=168/2

OpenStudy (jdoe0001):

ohh yeap, yes, 168/2 indeed

OpenStudy (highschoolmom2010):

c=84

OpenStudy (jdoe0001):

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