line calculations using its known coordinates

Hello every one
How to calculate the angle between two lines (lines have known coordinates)
Thanks

Réponses (1)

William Rose
William Rose le 30 Mai 2021

0 votes

Suppose slope of line 1 is a1 and slope of line 2 is a2. Then angle of line 1 relative to x axis is theta1=arctan(a1) and angle of line 2 is theta2=arctan(a2). Angle between lines is theta1-theta2.

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