Pengertian Trigonometri

PENGERTIAN

Pada segitiga siku-siku berlaku dalil phitagoras.

Sin a = a/c Cos a = b/c tg a = a/b

cosec a = c/a sec a = c/b ctg a = b/a

HUBUNGAN-HUBUNGAN

ctg a = 1/tg a sec a = 1/cos a cosec a = 1/sin a

tg a = sin a / cos a sin2 a + cos2 a = 1 tg2 a + 1 = sec2 a