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membentuk segitiga siku dengan sisi tegak = 8, dan sisi rebah 8.maka
tan A = 8/8 = 1
sin A = 1/akar2 ='1/2.akar2
cos A = 1/akar2 = 1/2.akar2
cotan A = 1
sec A = akar2
cosec A = akar2
10 ) berdasarkan dalil Phitagoras, maka sisi rebah = 6
sin T = 8/10 = 4/5
cos T = 6/10 = 3/5
tan T = 8/6 = 4/3
cotan T = 3/4
sec T = 10/6 = 5/3
cosec T = 10/8 = 5/4