document.write( "Question 246785: Find the absolute value -5+12i \n" ); document.write( "
Algebra.Com's Answer #180157 by Theo(13342) You can put this solution on YOUR website! I think your answer is here.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "http://www.regentsprep.org/rEGENTS/mathb/3C6/absvlecomlesson.htm\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-5 + 12i is equivalent to a + bi where:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a = -5 \n" ); document.write( "b = 12\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "|-5+12i| = |z| where |z| = sqrt(a^2 + b^2) = sqrt((-5)^2 + 12^2) = sqrt (25 + 144) = sqrt (169) = 13\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Apparently you are talking about a complex plane where the x-axis is the real part and the y-axis is the imaginary part of the complex number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It's like a vector where you are looking for the length of the vector.\r \n" ); document.write( "\n" ); document.write( "the graph forms a right triangle with the x-axis as the adjacent side and the line parallel to the y-axis as the opposite side.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the hypotenuse is the vector and the length of that is found by the pythagorean formula of a^2 + b^2 = c^2 with a being the real part and b being the imaginary part.\r \n" ); document.write( "\n" ); document.write( "Read the reference. It explains it pretty well. \n" ); document.write( " |