You can put this solution on YOUR website! Find the exact value and show the related quadrants of :
a. sin(5π/3)
Reference angle of π/3 in quadrant IV in which sin<0, cos>0.
sin(5π/3)=-sin(π/3)=-√3/2
..
b. tan(5π/3)
same reference angle of π/3 in quadrant IV in which tan<0
tan(5π/3)=-tan(π/3)=-√3
(