如果sinx=-1/2,x属于0,2π,则x为

Question

如果sinx=-1/2,x属于【0,2π】,则x为

Answer 1

x属于｛0,2π｝
sinx=-1/2,
∵sinπ/6=1/2
x=π+π/6=7π/6或x=2π-π/6=11π/6