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AB : BD : DA
90 : 30 : 60
2 : 1 : √3
8 : 4 : 4√3
AD = 4√3 cm
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perbandingan sisi ∆ kanan
AD : DC : CA
45 : 45 : 90
1 : 1 : √2
4√3 : 4√3 : (4√3)√2
4√3 : 4√3 : 4√6
AC = 4√6
AC = 9,79 cm
AC ≈ 9,8 cm
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