Angle ABC
Write the coordinates in the boxes.  Then press 

xA = yA =
xB = yB =
xC = yC =

angle ( ° ) =    angle (rad) =

dir BA: °    dir BC: °

If you have to put a coefficient using some function symbol (for example 1/5, √2), put it in a numerical form (0.2, 1.414213562373095), for example using this (or this)

notes


examples