determine the exact value for each of the following trigonometric ratios

Question

a. sin 5π/3

b. cos 5π/3

c. tan 5π/3

justify answer for c

Answer 1

sin(5pi/3) =(-sqr3)/2

cos(5pi/3) = 1/2

tan(5pi/3) = sin(5pi/3)/cos(5pi/3)

=(-sqr3)/2/(1/2)

= -sqr3