Mohon bantuannya mas mtk wajib sma

TRIGONOMETRI 1
• perbandingan trigonometri

sin A = 3/5 → tan A = 3/4
cos B = 12/13 → tan B = 5/12

tan (A + B)
= (tan A + tan B) / (1 - tsn A tan B)
= (3/4 + 5/12) / (1 - (3/4) (5/12))
= (9/12 + 5/12) / (1 - 15/48)
= 14/12 / 33/48
= 14/12 × 48/33
= 56/33 ← jwb ✓