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Mathematics 15 Online
OpenStudy (anonymous):

I've tried to do this by myself and I just cannot figure it out. Please help if you can! I have to find arc AB and arc BC. The diagram is in the comments.

OpenStudy (anonymous):

OpenStudy (klimenkov):

Let the center of this circle be \(O\). Can you find the degree of \(\angle AOC\) ?

OpenStudy (anonymous):

Wouldn't it be 360-140...? At least, that's what my textbook says to do...

OpenStudy (klimenkov):

|dw:1348158721557:dw| No. Think again.

OpenStudy (anonymous):

I'm not sure how to find it

OpenStudy (klimenkov):

Please, read this http://en.wikipedia.org/wiki/Inscribed_angle

OpenStudy (anonymous):

So lines OA and OC have equal lengths...right?

OpenStudy (klimenkov):

Yes. They are radiuses.

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