mat2.docx - Pembahasan Tinggi menara sekitar 34 meter 1 Dalam suatu bundar berjari-jari 8 cm dibentuk segi-8 beraturan Tentukan panjang sisi segi-8

# mat2.docx - Pembahasan Tinggi menara sekitar 34 meter 1...

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Pembahasan Tinggi menara sekitar 34 meter. 1. Dalam suatu bundar berjari-jari 8 cm, dibentuk segi-8 beraturan. Tentukan panjang sisi segi-8 tersebut! Pembahasan n = 8 r = 8 cm 2. Titik P dan Q dinyatakan dengan kordinat polar. Tentukan jarak antar titik P dan Q.

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Unformatted text preview: Pembahasan Besar sudut POQ = 180 o – (75 o +45 o ) = 60 o . PQ 2 = OQ 2 + OP 2 – 2.OQ.OP cos ∠ POQ PQ 2 = 3 2 + 5 2 – 2.3.5 cos 60 o c PQ 2 = 9 + 25 – 30. 0,5 PQ 2 = 9 + 25 -15 PQ 2 = 19 PQ = √19 = 4,36...
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• Summer '15
• DeboraWintriarsi

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