Segitiga siki-siku ABC mempunyai panjang sisi-sisi a=1 ,b=2 akar 2, dan c=3 Carilah nilai dari keenam perbandingan trigonometri untk Beta derajat.

1) Sinus Beta = b/c = (2 akar 2) / 3
2) Cosinus Beta = a/c = 1/3
3) Tangen Beta = b/a = (2 akar 2)/1 = 2 akar 2
4) Cosecan Beta = c/b = 3/2 akar 2
5) Secan Beta = c/a = 3/1 = 3
6) Cotangen Beta = a/b = 1/(2 akar 2)
atau dari sudut lancip lainnya
1) Sinus Alpha = a/c = 1/3
2) Cosinus Alpha = b/c = (2 akar 2)/3
3) Tangen Alpha = a/b = 1/(2 akar 2)
4) Cosecan Alpha = 3/1 = 3
5) Secan Alpha = c/b = 3/(2 akar 2)
6) Cotangen Alpha = b/a = (2 akar 2)/1 = 2 akar 2