Penjelasan dengan langkah-langkah:
TRIGONOMETRI DASAR
1. Cos B = ¾
y = √(4²–3²)
y = √(4+3)
y = √7
Tan B = √7
4
2. Tan B = 5
7
r = √(5² + 7²)
r = √(25 + 49)
r = √74
Sin B = 5
√74
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Penjelasan dengan langkah-langkah:
TRIGONOMETRI DASAR
1. Cos B = ¾
y = √(4²–3²)
y = √(4+3)
y = √7
Tan B = √7
4
Tan B = ¼√7 ✔
2. Tan B = 5
7
r = √(5² + 7²)
r = √(25 + 49)
r = √74
Sin B = 5
√74
Sin B = 5√74 ✔
74