
TRIGONOMETRI
Presentation
•
Mathematics
•
10th Grade
•
Medium
Rolita Simanjuntak
Used 2+ times
FREE Resource
5 Slides • 6 Questions
1
PERBANDINGAN TRIGONOMETRI
Rolita Betty Simanjuntak, S.Si
2
Tujuan Pembelajaran
Siswa Dapat menjelaskan bagian segitiga siku siku
Siswa dapat menjelaskan aturan sinus dan cosinus
Siswa dapat menyelesaikan masalah yang brkaitan dengan aturan sinus dan cosinus
3
Sgitiga Siku siku
Pada segitiga siku-siku terdapat tiga jenis sisi:
1. Sisi depan, yaitu sisi siku-siku yang berada di depan sudut.
2. Sisi samping, yaitu sisi siku-siku yang berada di samping sudut.
3. Sisi miring (hipotenusa), yaitu sisi yang berada di depan sudut siku-siku.
4
Perbandingan Trigonometri
1. sin θ = sisidepan/sisimiring = BC/AC
2. cos θ = sisi samping/sisimiring = AB/AC
3. tan θ = sisi depan/sisi samping = BC/AB
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Rumus Perbandingan Trigonometri
Teorema phythagoras:
r2 = x2 + y2
x2 = r2 − y2
y2 = r2 − x2
Perbandingan trigonometri:
sin θ = y/r dan csc θ = r/y
cos θ = x/r dan sec θ = r/x
tan θ = y/x dan cot θ = x/y
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Multiple Choice
Diketahui segitiga ABC dengan besar sudut C = 600. Jika a = 10 cm dan b= 5 cm, panjang c adalah...cm
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5
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5 3
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Multiple Choice
Nilai sinα adalah ....
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53
35
45
54
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Multiple Choice
Perbandingan antara sisi samping dan sisi miring pada segitiga siku-siku dalam trgionometri disebut ....
cosecan
sinus
cosinus
secan
tangen
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Multiple Choice
Panjang AC pada segitiga ABC di atas adalah ....
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17
19
21
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10
Multiple Choice
tan 30o= ...
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Open Ended
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PERBANDINGAN TRIGONOMETRI
Rolita Betty Simanjuntak, S.Si
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