Suppose we are given a Cartesian coordinate system, and in it, at any place, a point is placed. Draw a line through the origin and this point.
Find the tangent of the angle between this line and the axis of the abscissa.
You will need
- Knowledge of formulas by trigonometry and basic knowledge of geometry.
The tangent of the angle between this line and the axis of the abscissaWill be the ratio of the coordinate Y of this point, to the coordinate X to this point. Another way to find the tangent of the angle can be with the help of sines and cosines. If you know the cosine of this angle and the sine of this angle, then the tangent will be equal to the ratio of the sine to the cosine.