document.write( "Question 360470: angle DEF and angle FEG are complementary. m (angle) DEF= (3x-4), and m (angle) FEG= (5x+6) how do I find the measures of both angles? \n" ); document.write( "
Algebra.Com's Answer #257396 by Theo(13342)![]() ![]() You can put this solution on YOUR website! since the angles are complementary, then the sum of both angles must equal 90 degrees.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(5x + 6) + (3x - 4) = 90\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "remove parenthese and combine like terms to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "8x + 2 = 90\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract 2 from both sides of the equation to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "8x = 88\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "divide both sides of the equation to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 11\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "if x = 11, then:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "angle 1 = 5x + 6 = 61 degrees\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "angle 2 = 3x - 4 = 29 degrees\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "sum of the angles is 90 degrees as it should be.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "angle 1 = angle FEG\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "angle 2 = angle DEF\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "angle FEG = 61 degrees\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "angle DEF = 29 degrees\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |