θ	cos(θ)
0.0	0.000
5.0	0.087
10.0	0.176
15.0	0.268
20.0	0.364
25.0	0.466
30.0	0.577
35.0	0.700
40.0	0.839
45.0	1.000
50.0	1.192
55.0	1.428
60.0	1.732
65.0	2.145
70.0	2.747
75.0	3.732
80.0	5.671
85.0	11.430
90.0	∞