Question 449939
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Hi
6 trig functions of 5pi/6. (150°)
using the (cosx,sinx) summary below:
sin 150° = 1/2
csc 150° = {{{1/(1/2) = 2}}}
cos 150° = {{{-sqrt(3)/2}}}
sec 150° = {{{ 1/(-sqrt(3)/2) =  -2/sqrt(3)= (-2/3)sqrt(3)}}}
tan 150° = {{{(1/2)/(-sqrt(3)/2) = -1/sqrt(3)= -sqrt(3)/3}}}
<img src="http://www.math.ucsd.edu/~jarmel/math4c/Unit_Circle_Angles.png">