Suatu segitiga siku siku di Q, tan p=3/4, maka nilai perbandingan cos p

tan = depan / samping
cos = samping / miring

cari sisi miring
sisi miring = √3² + 4² = √9 + 16 = √25 = 5

cos p = samping / miring
cos p = 4/5

tan p = 3/4
tan = depan/samping

sisi depan p = 3
sisi samping p = 4
miring² = samping² + depan²
miring² = 4² + 3²
miring² = 16 + 9
sisi miring = 5

cos p = sisi samping/ sisi miring
cos p = 4/5

maaf kalau salah...