NILAI PERBANDINGAN TRIGONOMETRI DI KWADRAN III
(MATEMATIKA KELAS X SMA / MA / SMK / MAK)
Oleh : Suryadi
Direction of Education Apenso Indonesia
sin alpha = - y/r
cos alpha = - x/r
tan alpha = y/x
Contoh:
Lihat gambar segitiga di atas
sudut alpha = 210°
x = √3
r = 2
y = 1
sin 210° = - y/r
= - 1/2
cos 210° = -x/r
= -√3/2
tan 210° = y/x
= 1/√3
= 1/3 √3
Hubungi : WA 0823 3846 4171
🌸Selamat Belajar & Good Luck!🌸
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