cos(x) = 7/10
tan(x) = y
tan(x) = y
5.48778647699544
-1.02020406122041
0.795398830184144
1.02020406122041
x1 = 5.487786476995443 y1 = -1.020204061220407
x2 = -13.36176944454332 y2 = -1.020204061220407
x3 = -5.487786476995443 y3 = 1.020204061220407
x4 = 0.7953988301841435 y4 = 1.020204061220407
x5 = 13.36176944454332 y5 = 1.020204061220407
x5 = 13.36176944454332 y5 = 1.020204061220407