sin(-5π/3)等于

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sin(-5π/3)等于sin(-5π/3)等于sin(-5π/3)等于sin(-5π/3)=sin(-5π/3+2π)=sin(π/3)=√3/2

sin(-5π/3)等于
sin(-5π/3)等于

sin(-5π/3)等于
sin(-5π/3)
=sin(-5π/3+2π)
=sin(π/3)
=√3/2