SOLUTION: How to define these points on numerical circle: http://prntscr.com/5u002r

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Question 939877: How to define these points on numerical circle: http://prntscr.com/5u002r
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

E%285pi%2F6%29+ corresponding to angle 150° where point E on a unit circle has coordinates
(-sqrt%283%29%2F2,1%2F2)

E%283pi%2F4%29+ corresponding to angle 135° where point E on a unit circle has coordinates
(-sqrt%282%29%2F2,sqrt%282%29%2F2)

E%284pi%2F3%29+ corresponding to angle 240° where point E on a unit circle has coordinates
(-1%2F2,-sqrt%283%29%2F2)

E%2811pi%2F6%29+ corresponding to angle 330° where point E on a unit circle has coordinates
(sqrt%283%29%2F2,-1%2F2)