1)
Luas ∆ = 1/2 x a x b x sin C
Luas ∆ = 1/2 x 10 x 20 x sin 60° = 50√3cm²
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1)
Luas ∆ = 1/2 x a x b x sin C
Luas ∆ = 1/2 x 10 x 20 x sin 60° = 50√3cm²