Berarti :
BC/sin A = AB/sin C
12/sin 60° = AB/sin 45°
12/(1/2√3) = AB/(1/2√2)
AB = 12 x (1/2)√2 / (1/2√3)
AB = 6√2 / (1/2 √3)
AB = 12√2/√3
AB = (12√6)/3
AB = 4√6
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Berarti :
BC/sin A = AB/sin C
12/sin 60° = AB/sin 45°
12/(1/2√3) = AB/(1/2√2)
AB = 12 x (1/2)√2 / (1/2√3)
AB = 6√2 / (1/2 √3)
AB = 12√2/√3
AB = (12√6)/3
AB = 4√6