document.write( "Question 168503: The largest angle in a triangle is twice the degree measure of the second largest angle. One-third of the largest angle is 10 degrees larger than the difference of the other two.. Whaat is the measure in degreesof the smallest angle? \n" ); document.write( "
Algebra.Com's Answer #124189 by gonzo(654)![]() ![]() ![]() You can put this solution on YOUR website! a = largest angle \n" ); document.write( "b = second largest angle \n" ); document.write( "c = smallest angle \n" ); document.write( "----- \n" ); document.write( "a = 2*b \n" ); document.write( "(1/3)*a = b - c + 10 \n" ); document.write( "----- \n" ); document.write( "c formula becomes: \n" ); document.write( "c = b - (1/3)*a + 10 \n" ); document.write( "which becomes: \n" ); document.write( "c = b - (2/3)*b + 10 \n" ); document.write( "which becomes \n" ); document.write( "c = (1/3)*b + 10 \n" ); document.write( "----- \n" ); document.write( "a + b + c = 180 (sum of angles of a triangle = 180) \n" ); document.write( "2*b + b + (1/3)*b + 10 = 180 \n" ); document.write( "2*b + b + (1/3)*b = 170 \n" ); document.write( "3*b + (1/3)*b = 170 \n" ); document.write( "multiply both sides by 3: \n" ); document.write( "9*b + b = 510 \n" ); document.write( "10*b = 510 \n" ); document.write( "b = 51 \n" ); document.write( "----- \n" ); document.write( "2*b = 102 = a \n" ); document.write( "c = b - (1/3)*a + 10 \n" ); document.write( "c = 51 - (1/3)*102 + 10 \n" ); document.write( "c = 27 \n" ); document.write( "----- \n" ); document.write( "a = 102 \n" ); document.write( "b = 51 \n" ); document.write( "c = 27 \n" ); document.write( "----- \n" ); document.write( "a + b + c = 180 \n" ); document.write( "102 + 51 + 27 = 180 \n" ); document.write( "180 = 180 \n" ); document.write( "ok \n" ); document.write( "----- \n" ); document.write( "a = 2 * b \n" ); document.write( "102 = 2 * 51 \n" ); document.write( "102 = 102 \n" ); document.write( "ok \n" ); document.write( "----- \n" ); document.write( "(1/3)*a = (b-c) + 10 \n" ); document.write( "1/3)*102 = (51 - 27) + 10 \n" ); document.write( "34 = 30 \n" ); document.write( "ok \n" ); document.write( "----- \n" ); document.write( " |