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Latihan Soal #15 [B] Identitas Trigonometri 3 (Lat Soal Diktat Smak 1), Buktikan ; 1 Per (Sin A + 1) – 1 Per (Sin A – 1) = 2 Sec^2 A

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Latihan Soal #15 [B] Identitas Trigonometri 3 (Lat Soal Diktat Smak 1), Buktikan ; 1 Per (Sin A + 1) – 1 Per (Sin A – 1) = 2 Sec^2 A