Penjelasan dengan langkah-langkah:
Gunakan rumus sinus
AC = BC
sin 45° sin 30°
AC = 10
½√2 ½
••• kali silang •••
½AC = 10 × ½√2
•••• coret ½ nya ••••
AC = 10√2
Jadi panjang sisi B = 10√2
sisi b = AC
sin A/BC = sin B/b
sin 30°/10 = sin 45°/b
½/10 = ½√2 / b
2 × (½/10) = 2 × (½√2 / b)
1/10 = √2/b
b = √2 ÷ 1/10
b = √2 × 10
b = 10√2
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Penjelasan dengan langkah-langkah:
sisi b = ruas AC
Gunakan rumus sinus
AC = BC
sin 45° sin 30°
AC = 10
½√2 ½
••• kali silang •••
½AC = 10 × ½√2
•••• coret ½ nya ••••
AC = 10√2
Jadi panjang sisi B = 10√2
sisi b = AC
sin A/BC = sin B/b
sin 30°/10 = sin 45°/b
½/10 = ½√2 / b
2 × (½/10) = 2 × (½√2 / b)
1/10 = √2/b
b = √2 ÷ 1/10
b = √2 × 10
b = 10√2
AC = 10√2