is there a way to calculate the angle of a line in a grid based system?
ok appraently u take the arc tangent of the slope to calculat the angle does any 1 know how to calculate the arc tangent?
If the equation of the straight line is
ax+by+c=0, then the slope is given by the formula
But the slope of the line is tan of the angle made with the x-axis.
The angle is the arctan of the slope m.
The arctan can be known by referring to tables or by using a calculator (scientific mode).
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