document.write( "Question 857019: Have to find the ANGLE of points CAB
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Algebra.Com's Answer #516328 by Fombitz(32388)\"\" \"About 
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CAB is not an angle since it doesn't go through the center.
\n" ); document.write( "C,A, and B are all points on the circle.
\n" ); document.write( "I think you're looking for the angle BOA.
\n" ); document.write( "Since line segments AR=RB then angles BOC=COA
\n" ); document.write( "BOC+COA+BOA=360
\n" ); document.write( "BOA=360-30-30
\n" ); document.write( "BOA=300\r
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