tanA属于[负根号3/3,根号3/3]求A的范围,急
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![tanA属于[负根号3/3,根号3/3]求A的范围,急](/uploads/image/z/5911703-71-3.jpg?t=tanA%E5%B1%9E%E4%BA%8E%5B%E8%B4%9F%E6%A0%B9%E5%8F%B73%2F3%2C%E6%A0%B9%E5%8F%B73%2F3%5D%E6%B1%82A%E7%9A%84%E8%8C%83%E5%9B%B4%2C%E6%80%A5)
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tanA属于[负根号3/3,根号3/3]求A的范围,急
tanA属于[负根号3/3,根号3/3]求A的范围,急
tanA属于[负根号3/3,根号3/3]求A的范围,急
tanA属于[负根号3/3,根号3/3]
即-√3/3≤tanA≤√3/3
∴-π/6+kπ≤A≤π/6+kπ,k∈Z
即A的范围[-π/6+kπ.π/6+kπ],k∈Z