Answer:
C; [tex]\frac{5\pi }{3}[/tex]
Step-by-step explanation:
According to the unit circle, the ordered pair for [tex]\frac{5\pi }{3}[/tex] is [tex](\frac{1}{2} ,\frac{-\sqrt{3} }{2} )[/tex]
Sin is the y-value on the unit circle while Cos is the x-value on the unit circle, so [tex]\frac{5\pi }{3}[/tex] is the angle that fits the critera
