tan(-35π/3°)=输入错误 是 tan(-35π/3)=
1个回答
tan(x)=tan(x+k*π) (k=1,2,3,4,……)
所以原式可以化简
tan(-35π/3)=tan[(-35π/3)+12π]
=tan(π/3)
=更号3
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