tolong jawaban dan penyelsaiannya

ATuran Sinus

<C = 180 - (<A + <B)
<C = 45

AB /sin C =AC/sin B
AB = (AC)(sin C)/ (sin B)
AB = (5√2)(sin 45) / (sin 30)

AB = (5√2)( ¹/₂ √2) /(¹/₂)
AB = (5√2)(√2)
AB = 10 cm