jika dik cos a= 3/5 (sudut A lancip) hitunglah perbandingan trigonometri sin A , tan A , secan A , cosec A , cotan A

Bab Trigonometri
Matematika SMA Kelas X

cos A = 3/5 = x/r

y = √(r² - x²)
y = √(5² - 3²)
y = √(25 - 9)
y = √16
y = 4

1] sin A = y/r = 4/5
2] tan A = y/x = 4/3
3] sec A = r/x = 5/3
4] cosec A = r/y = 5/4
5] cot A = x/y = 3/4