document.write( "Question 486657: find the angle of 5x+8 and x+4 \n" ); document.write( "
Algebra.Com's Answer #332651 by chessace(471)\"\" \"About 
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Slope of a line = tan (its angle) and = coefficient of x in normal form.
\n" ); document.write( "So angle(line) = arctan(coefficient of x)
\n" ); document.write( "Ans = angle (5x+8) - angle (x+4)
\n" ); document.write( "= arctan(5) - arctan(1)
\n" ); document.write( "= 78.7 - 45
\n" ); document.write( "= 33.7 degrees
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