(1-tanα)/(1+tanα)=3+2根号2 求(sinα+cosα)-1/(cotα-sinα乘cosα) 的值
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![(1-tanα)/(1+tanα)=3+2根号2 求(sinα+cosα)-1/(cotα-sinα乘cosα) 的值](/uploads/image/z/805749-69-9.jpg?t=%281-tan%CE%B1%29%2F%281%2Btan%CE%B1%29%3D3%2B2%E6%A0%B9%E5%8F%B72+%E6%B1%82%EF%BC%88sin%CE%B1%2Bcos%CE%B1%29-1%2F%28cot%CE%B1-sin%CE%B1%E4%B9%98cos%CE%B1%29+%E7%9A%84%E5%80%BC)
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