tolong juga gunakan caranya

Ingat rumus:
a/sinA = b/sinB = c/sinC

Diketahui:
b = √2
c = 2
sinB = 30° = 1/2

Ditanya:
sinC = ??

Jawab:
b/sinB = c/sinC
√2/(1/2) = 2/sinC
sinC = (1/2 x 2)/√2
sinC = 1/√2
sinC = 1/2√2
sinC = 45°