document.write( "Question 513394: How do you do this problem?\r
\n" ); document.write( "\n" ); document.write( "You're supposed to find the third angle of the triangle.\r
\n" ); document.write( "\n" ); document.write( "y degrees, 110 degrees, __________
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Algebra.Com's Answer #342988 by umail08(87)\"\" \"About 
You can put this solution on YOUR website!
The sum of the angles of a triangle is 180 degrees, so:
\n" ); document.write( "Let Angle A = y degrees, Angle B = 110 degrees, Angle C = unknown
\n" ); document.write( "Angle A + angle B + Angle C = 180 degrees
\n" ); document.write( "Y + 110 + Angle C = 180 degrees
\n" ); document.write( " Angle C = 180 – y – 110
\n" ); document.write( " Angle C = 70 – y
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