tolong ya nomor 4 dan tolong abaikan coret²nya

Materi: Trigonometri Dasar.

Perbaikan:
Setelah tanda = ke dua dari terakhir, harusnya
2 / (1- akar 3) = -1 - akar 3 (A)

V = akar
(sin 30° + cos 30°)/(sn^2 30° - cos^2 30°)
= (1/2 + 1/2V3)/((1/2)^2 - (1/2V3)^2)
= 1/2(1 + V3)/(1/4 - 3/4)
= 1/2(1 + V3)/(-2/4)
= (1/2 × (-4/2)) × (1 + V3)
= - 1 × (1 + V3)
= -1 - V3