hope it you
step-by-step explanation:
sin(7pi/6 - pi/3)
= sin(7pi/6 - 2pi/6)
= sin(5pi/6)
= sin(pi - pi/6)
= sin(pi/6)
= 1/2
sin 7pi/6 - sin pi/3
= sin (pi + pi/6) - sin pi/3
= -sin pi/6 - sin pi/3
= -1/2 - sqrt(3)/2
= -(1+sqrt(3))2
b
it have 5 sides and 5 identicle angle.the rest does not have the same property as b.
brainliest