sin(-5π⼀6)=?

2025-11-29 08:41:30
推荐回答(2个)
回答1:

sin(-5π/6)=
=-sin(5π/6)
=-sin(150°)
=-1/2

回答2:

sin(-5π/6)
=-sin(5π/6)
=-sin(π/6)
=-1/2