Jawabanmu

2014-04-15T22:47:37+07:00
AB^2 = AC^2 - BC^2 (segitiga siku-siku)
AB = akar 64-16
AB = akar 48
AB = 4 akar3
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Jawaban paling cerdas!
2014-04-15T22:53:09+07:00
AB² = 8² + 4² - 2×4×8 sin 30
AB² = 64 + 16 - 32
AB² = 80 - 32 
AB² = 48
AB = √48
AB = √16×3
AB = 4√3
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