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Mathematics 13 Online
OpenStudy (anonymous):

Given line DR is tangent to circle O, if < RDC = 150 degrees, then arc DAC = ? https://media.glynlyon.com/g_geo_2012/7/group186.gif

OpenStudy (pixiedust1):

WELCOME TO OPEN STUDY :D

OpenStudy (anonymous):

thanks yous :D

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