Page 52 - modul trigonometri bilingual
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Example 4.1
Known triangle ABC with length BC = 12 cm, value sin = 0,36 and
sin = 0,9. Determine the length of the AC.
Alternative Solutions
Use the sine rule on the ABC triangle.
= =
sin sin sin
⇔ =
sin sin
12
⇔ =
0,36 0,9
12
⇔ = × 0,9
0,36
100 9
= 12 × ×
36 10
10
= 12 × = 30
4
So, the length of the air conditioner is 30 cm
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