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<font color="#33CC00"><font size="2"><font face="calibri,sans
serif,arial"><font color="#000000">Hi<font size="2">,<br>
<br>
<font size="2">I want to calculate angle<font size="2">
between two 3D points.Suppose the points are (5,5,5)</font></font>
and (1,2,3). For 2D points i know how can i do this.But
for 3D points i need help from some one.Any help will be
appreciated.<br>
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