Distance between P and the line through S and T
Write the values in the boxes.  Then press    -  Clear all:   Clear P/S/T:
P:  , 

S: ,   T: ,

distance =


=   A
(you can use "A" as one or both inputs)
If you have to put a coefficient using some other function symbol (for example √2; π/2), put it in a numerical form (1.414213562373095, 1.5707963267949), for example using this (or this)