解下列方程:1)2sin(π/3-x )=1 2)5cos(3x-π/4)=-2 急!
1个回答
1)2sin(π/3-x )=1 2)5cos(3x-π/4)=-2
sin(π/3-x )=1/2 你没写错吧
π/3-x =π/6
x=-3
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