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Halbrecht
10 months ago

removing two points P1 and P2

Root (x1-x2)2 + (y1-y2)2 )

.

for c) the straight line equation of the south coast (with (-2/0) to (8/0) feasible )

to find y

and straight gradient m(8/8.5) to (7/y)

tan(m) is the angle