
trigonometri
Presentation
•
Mathematics
•
11th Grade - Professional Development
•
Hard
rina yusriyana
FREE Resource
5 Slides • 2 Questions
1
Persamaan Trigonometri Dasar
2
tujuan pembelajaran
Menentukan Himpunan Penyelesaian persamaan trigonometri sederhana pada interval tertentu.
3
persamaan trigonometri
"sin"
Untuk menyelesaikan permasalahan trigonometri, mungkin kamu akan menemukan nilai sudut yang lebih dari satu. Hal itu karena grafik fungsi trigonometri memuat nilai yang sama di beberapa sudut. Contohnya persamaan y = sin x , untuk
-360o ≤ x ≤ 360o. Jika digambarkan dalam bentuk grafik, persamaan
y = sin x, untuk -360o ≤ x ≤ 360o, akan menjadi seperti berikut.
4
sin x = sin a
sin x = a + k. 360⁰
sin x = (180⁰ - a) + k. 360⁰
5
CONTOH SOAL
6
Multiple Choice
Himpunan penyelesaian dari 2 sin 𝑥 = 1 untuk 0° ≤ 𝑥 ≤ 360° adalah ....
{60°}
{60°, 120°}
{60°, 150°}
{30°, 150°}
{30°, 150°, 210°}
7
Open Ended
Tentukan himpunan penyelesaian dari persamaan berikut.
sin(3𝑥 − 30°) = −21 , 0° ≤ 𝑥 ≤ 180°
Persamaan Trigonometri Dasar
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