BBS: Inland Empire Archive Date: 06-26-92 (01:17) Number: 1342 From: PAUL LEONARD Refer#: NONE To: MIKE THAYER Recvd: NO Subj: Calculating Angles Conf: (2) Quik_Bas

On or about <Jun 23 07:46>, Mike Thayer (1:271/29) scribbled: MT> The Problem is in figuring the angle. Does anyone know of a MT> way to calculate an angle given two points on the screen? That is if MT> we can assume that horizon is 0 degrees? You need at least three points to define any given angle (except 0, 90, 180, 270, etc.). So, i'll assume you mean given any two points, what is the angle between the line they define and the horizontal axis? .(x2,y2) / | / | / | .)a_____ (x1,y1) tan(a)=(y2-y1)/(x2-x1) or a=arctan((y2-y1)/(x2-x1)) ptl --- msged 2.07 * Origin: PTL Pointwork (1:105/48.111)

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