document.write( "Question 203992: Q- Find the angle whose complementry angle is 18 more.\r
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document.write( "A:- is 54 but how??? plz explain.\r
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Algebra.Com's Answer #153908 by Theo(13342)![]() ![]() You can put this solution on YOUR website! if an angle is x degrees, then its complementary angle is 90-x because the sum of the angle and its complementary angle must equal 90 degrees. \n" ); document.write( "----- \n" ); document.write( "your problem asks to find the angle who complementary angle is 18 degrees more than the angle. \n" ); document.write( "----- \n" ); document.write( "let your angle = x \n" ); document.write( "let your complementary angle = x+18 \n" ); document.write( "----- \n" ); document.write( "since an angle and its complementary angle must equal 90 degrees, your equation is: \n" ); document.write( "x + (x + 18) = 90 \n" ); document.write( "remove parentheses to get x + x + 18 which is the same as 2x + 18 = 90 \n" ); document.write( "subtract 18 from both sides of this equation and you get 2x = 72 \n" ); document.write( "divide both sides of this equation by 2 and you get x = 36 \n" ); document.write( "----- \n" ); document.write( "your angle is 36 degrees \n" ); document.write( "your complementary angle is 36 + 18 = 54 degrees \n" ); document.write( "54 + 36 = 90 \n" ); document.write( "----- \n" ); document.write( " \n" ); document.write( " |