April 2019 1 81 Report
Diketahui segitiga ABC siku siku di B dan panjang AB = 6 cm. titik D dan F pada AC sedemikian sehingga AF = CD = 4 cm. segitiga FED siku siku di D. nilai cos segita BAC = 3/7 dan sin segitiga DEF = 3/5

1. Panjang DF =...
2. Panjang EF =...
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