document.write( "Question 1182638: Given triangle ABC, point E is along side AC and point
\n" ); document.write( "D is along side BC. Line BE and AD are the angle
\n" ); document.write( "bisectors of angle B and A respectively. If the angle BEC
\n" ); document.write( "= 75° and angle ADC = 84°, find the ACB.
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Algebra.Com's Answer #812735 by greenestamps(13203)\"\" \"About 
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\n" ); document.write( "Let angle ABC be 2x degrees
\n" ); document.write( "Let angle BAC be 2y degrees

\n" ); document.write( "Then the angle we are to find, ACB, is (180-(2x+2y)) degrees.

\n" ); document.write( "Angles EBA and EBC are each x degrees; angles DAB and DAC are each y degrees.

\n" ); document.write( "Angle BEC is 75 degrees, so angle BEA is 180-75=105 degrees; angle ADC is 84 degrees, so angle ADB is 180-84=96 degrees.

\n" ); document.write( "In triangle ABD,

\n" ); document.write( "96+2x+y=180 [1]

\n" ); document.write( "In triangle ABE,

\n" ); document.write( "105+x+2y=180 [2]

\n" ); document.write( "Solve the pair of equations [1] and [2] to find x and y; then use those to find the answer to the problem.

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