Question

Segitiga abc panjang ac:12 cm sudut a 60° dan sudut b 45° , tentukan panjang bc ?

Answer 1

Aturan sinus
AC/sin B = BC/sin A
12/sin 45 = BC/ sin 60

BC = (12 . sin 60)/(sin 45)
BC = 12(¹/₂ √3) / (¹/₂ √2)
BC = 12√3/√2
BC = (12/2) √6
BC = 6√6