buktikan sin²x / 1-cos x = 1+cos x

Halo Diana, jawaban untuk soal di atas adalah terbukti sin²x/(1–cos x) = 1+cos x Ingat kembali: sin²x + cos²x = 1 ➡️ sin²x = 1–cos²x a²–b² = (a+b)(a–b) (a·b)/c = a·(b/c) sin²x/(1–cos x) = 1+cos x Ruas kiri = sin²x/(1–cos x) = (1–cos²x)/(1–cos x) = {1²–(cos x)²}/(1–cos x) = (1+cos x)(1–cos x)/(1–cos x) = (1+cos x)·{(1–cos x)/(1–cos x)} = (1+cos x)·1 = 1+cos x = Ruas kanan (terbukti) Jadi, terbukti bahwa sin²x/(1–cos x) = 1+cos x Semoga membantu ya