nilai sin 30° + cos² 45° tan² 60° / cosec 30° cotan 45° =
Matematika
silviana41
Pertanyaan
nilai sin 30° + cos² 45° tan² 60° / cosec 30° cotan 45° =
1 Jawaban
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1. Jawaban whongaliem
(sin 30° + cos² 45° .tan² 60°) / (cosec 30° .cotan 45°)
= {1/2 + (1/2√2)² .(√3)² } / ( 2 . 1)
= (1/2 + 1/2 . 3) / 2
= (1/2 + 3/2) / 2
= (4/2) / 2
= 2/2
= 1