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|dw:1362958545027:dw|

Where is the center of the circle?

|dw:1362958715978:dw|

Is O the center of the circle?

do ya wanna find length of ABC? if yes then u need radius if no then i will figure it out

It is necessary to the solution of a problem to know what we are trying to find.

Yeah i got the chord and arc mixed up.

|dw:1362959283763:dw|

Yes it is correct

Do you know what central angles are?

yeah

Do you know that central angles are equal to their arcs?

No. I think i forgot that.

Can you solve the problem now?

Uhmm can you tell me the steps?

What is the measure of arc AOB?

67

What is the measure of arc COB?

55. Do i add 55 and 67?

yes

ahhh! thanks man!

yw

so 122 degrees

yes. You added those numbers flawlessly!!

haha thanks

yw