A. 1/2 b. -1/2 c. 1 d. -1 e. 0

Jawbanya c
= sin 120 + sin 150/cos 330 – cos 240
(sin(180-60) kwd II) + (sin(180-30) kwd II) =_________________________________
(cos(360-30) kwd IV) – (cos(180+60) kwd III)
sin 60 + sin 30
=____________
cos 30 – (-cos60
1/2 akar 3 +1/2
=____________
1/2akar 3 -(-1/2)
1/2 akar 3 +1/2
=____________
1/2 akar 3 + 1/2
=1
(maaf kalo salah)