in 3dec i tried creating a circular tunnel using the existing code in tutorial file for tunnel. but im getting this error. the code is as foll.
| tx1=txc+tr*cos(360*degrad) |
|---|
| tx2=txc+tr*cos(337.5*degrad) |
| tx3=txc+tr*cos(315*degrad) |
| tx4=txc+tr*cos(292.5*degrad) |
| tx5=txc+tr*cos(270*degrad) |
| tx6=txc+tr*cos(247.5*degrad) |
| tx7=txc+tr*cos(225*degrad) |
| tx8=txc+tr*cos(202.5*degrad) |
| tx9=txc+tr*cos(180*degrad) |
| tx10=txc+tr*cos(157.5*degrad) |
| tx11=txc+tr*cos(135*degrad) |
| tx12=txc+tr*cos(112.5*degrad) |
| tx13=txc+tr*cos(90*degrad) |
| tx14=txc+tr*cos(67.5*degrad) |
| tx15=txc+tr*cos(45*degrad) |
| tx16=txc+tr*cos(22.5*degrad) |
| tx17=txc+tr*cos(0*degrad) |
whats wrong here ?? please help