Tentukan unsur yg belum dik AB=16cm dan sudut a=70°dan sudut b=60°
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Tentukan unsur yg belum dik AB=16cm dan sudut a=70°dan sudut b=60°
1 Jawaban
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1. Jawaban 18Navillera
<C = 180 - (60+70) = 50°
AB/sin C = BC/sin A
16/sin 50 = BC/sin 70
BC = 16 * 0,94/0,77
BC = 15,04/0,77
BC = 19,53 cm
AC/sin B = AB/sin C
AC/sin 60 = 16/sin 50
AC = 16 * 1/2 akar 3/0,77
AC = 8akar3/0,77
AC = 18 cm