PEMBAHASAN
Trigonometri
∆ABC siku di B
AB = 24
BC = 7
AC = √(AB² + BC²) = 25
∆ADC siku di D
AD = 20
AC = 25
DC = √(AC² - AD²) = 15
sudut alpha = a = ∠DAC
sin a = DC/AC = 15/25 = 3/5
csc a = AC/DC = 5/3
cos a = AD/AC = 20/25 = 4/5
sec a = AC/AD = 5/4
tan a = DC/AD = 15/20 = 3/4
cot a = AD/DC = 4/3
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PEMBAHASAN
Trigonometri
∆ABC siku di B
AB = 24
BC = 7
AC = √(AB² + BC²) = 25
∆ADC siku di D
AD = 20
AC = 25
DC = √(AC² - AD²) = 15
sudut alpha = a = ∠DAC
sin a = DC/AC = 15/25 = 3/5
csc a = AC/DC = 5/3
cos a = AD/AC = 20/25 = 4/5
sec a = AC/AD = 5/4
tan a = DC/AD = 15/20 = 3/4
cot a = AD/DC = 4/3