Question 279377
pi/6 is 30º


cos(30) = cos(-30) = [sqrt(3)] / 2


sin(30) = 1 / 2


(1/2)^2 - 2[(1/2)((sqrt(3))/2)] + [(sqrt(3)) / 2]^2


(1/4) - [(sqrt(3)) / 2] + (3/4)


1 - [(sqrt(3)) / 2] ___ or ___ [2 - sqrt(3)] / 2