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Mathematics 30 Online
OpenStudy (anonymous):

Circles Please help

OpenStudy (anonymous):

Ahhhh I've tried many ways but the answer choices are confusing me /:

OpenStudy (agent0smith):

I don't remember the formula for this... If you have notes for the class, it will be in there.

OpenStudy (agent0smith):

http://regentsprep.org/Regents/math/geometry/GP15/CircleAngles.htm here it is

OpenStudy (anonymous):

I just found it!! This formula is the one where you subtract the two arcs, and it's 1/2 the difference of that.

OpenStudy (agent0smith):

2x = 1/2 * (309 - 51)

OpenStudy (anonymous):

360 - 309 = 51 Then, 309 - 51 = 258. Half of 258 = 129 which is what 2x should equal. So the answer is 64.5. (64.5 x 2 = 129) I just remembered this, thanks for the help

OpenStudy (agent0smith):

Good job :)

OpenStudy (anonymous):

Thank you :D

OpenStudy (agent0smith):

:D

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