
Perbandingan Trigonometri Sudut-sudut Istimewa
Presentation
•
Mathematics
•
11th Grade
•
Practice Problem
•
Medium
Siti Nurjanah
Used 9+ times
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9 Slides • 2 Questions
1
Assalamualaikum. . Wr.Wb
Silahkan salin kedalam buku catatan!
2
Perbandingan Trigonometri sudut-sudut istimewa
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Nilai perbandingan trigonometri untuk 0°, 30°, 45°, 60°, dan 90°
Sudut istimewa adalah sudut dengan nilai perbandingan trigonometri yang dapat ditentukan nilainya tanpamenggunakan kalkulator
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Contoh 1
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Jawab
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Diketahui segitiga ABC siku-siku di B dan besar sudut C adalah 60o. Jika panjang AC = 12 cm, maka tentukanlah panjang :
(a) AB (b) BC
Jawab:
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Seseorang melihat puncak menara dari suatu tempat dengan sudut elevasi 600. Jika diketahui tinggi menara adalah 90 m maka tentukanlah jarak orang tersebut ke kaki menara (tinggi orang diabaikan)
Contoh 3
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Fill in the Blanks
Hasil dari 14 cos 6π−8 sin 3πadalah...
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Multiple Choice
Seekor kelinci yang berada di lubang tanah tempat persembunyiannya melihat seekor elang yang sedang terbang dengan sudut 60° (lihat gambar). Jika jarak antara kelinci dan elang adalah 18 meter, maka tinggi elang dari atas tanah adalah ⋯⋅ meter.
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3√3
6√3
9√3
12√3
Assalamualaikum. . Wr.Wb
Silahkan salin kedalam buku catatan!
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