Materi aturan sinus dan cosinus
Presentation
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Kusnandar Kusnandar
Used 4+ times
FREE Resource
11 Slides • 0 Questions
1
by Kusnandar
2
Diketahui segitiga ABC.
Buatlah garis tinggi
Perhatikan segitiga AEC dan segitiga BEC
3
Diketahui segitiga ABC.
Perhatikan segitiga ACD dan segitiga ABD
4
5
6
7
Diketahui segitiga ABC berikut.
Buat garis tinggi (CD).
Perhatikan segitiga DBC
Perhatikan segitiga ADC
Dengan teorema Pythagoras diperoleh:
8
Diketahui segitiga ABC berikut.
Dengan cara yang sama dapat diperoleh:
Dapat disimpulkan aturan cosinus:
9
10
= 1300 - 600
= 700
11
Aturan sinus
Jika diketahui:
sisi, sudut, sudut
sudut, sisi, sudut
sisi, sisi, sudut
Aturan cosinus
Jika diketahui:
sisi, sudut, sisi
sisi, sisi, sisi
by Kusnandar
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