sin a = 3/5
→ sisi depan = 3
→ sisi miring = 5
x² = 5² - 3²
x² = 25 - 9
x² = 16
x = √16
x = 4
cos a = sisi samping/sisi miring
cos a = 4/5
tan a = sisi depan/sisi samping
tan a = 3/4
Mapel: Matematika
Kelas: X
Materi: Bab 7 - Trigonometri
Kode Kategorisasi: 10.2.7
Penjelasan dengan langkah-langkah:
sin ɑ = 3/5
sin = a/c
b = √(c² - b²)
b = √(5² - 3²)
b = √(25 - 9)
b = √16
b = 4
di kuadran 1 → nilainya positif smua
a. cos ɑ
= b/c
= 4/5
b. tan ɑ
= a/b
= 3/4
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sin a = 3/5
→ sisi depan = 3
→ sisi miring = 5
x² = 5² - 3²
x² = 25 - 9
x² = 16
x = √16
x = 4
cos a = sisi samping/sisi miring
cos a = 4/5
tan a = sisi depan/sisi samping
tan a = 3/4
_____________
DETAIL JAWABAN
Mapel: Matematika
Kelas: X
Materi: Bab 7 - Trigonometri
Kode Kategorisasi: 10.2.7
Penjelasan dengan langkah-langkah:
sin ɑ = 3/5
sin = a/c
b = √(c² - b²)
b = √(5² - 3²)
b = √(25 - 9)
b = √16
b = 4
di kuadran 1 → nilainya positif smua
a. cos ɑ
= b/c
= 4/5
b. tan ɑ
= a/b
= 3/4