SOLUTION: find the angle of 5x+8 and x+4

Question 486657: find the angle of 5x+8 and x+4
Answer by chessace(471) (Show Source): You can put this solution on YOUR website!
Slope of a line = tan (its angle) and = coefficient of x in normal form.
So angle(line) = arctan(coefficient of x)
Ans = angle (5x+8) - angle (x+4)
= arctan(5) - arctan(1)
= 78.7 - 45
= 33.7 degrees

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