sin(-4π/3)怎么算
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sin(-4π/3)怎么算sin(-4π/3)怎么算sin(-4π/3)怎么算sin(-4π/3)=-sin(4π/3)=-sin[(3π+π)/3]=-sin[π+π/3]=sin[π/3]=sin
sin(-4π/3)怎么算
sin(-4π/3)怎么算
sin(-4π/3)怎么算
sin(-4π/3)
=-sin(4π/3)
=-sin[(3π+π)/3]
=-sin[π+π/3]
=sin[π/3]
=sin[60°]
=√3/2
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