(1+tanα)^2+(1+tanα)^2=2/cosα^2拜托各位了 3Q化简:(2)sin^2(α+β)-1 求证:(1+tanα)^2+(1+tanα)^2=2/cosα^2
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![(1+tanα)^2+(1+tanα)^2=2/cosα^2拜托各位了 3Q化简:(2)sin^2(α+β)-1 求证:(1+tanα)^2+(1+tanα)^2=2/cosα^2](/uploads/image/z/9311640-24-0.jpg?t=%EF%BC%881%2Btan%CE%B1%EF%BC%89%5E2%2B%281%2Btan%CE%B1%29%5E2%3D2%2Fcos%CE%B1%5E2%E6%8B%9C%E6%89%98%E5%90%84%E4%BD%8D%E4%BA%86+3Q%E5%8C%96%E7%AE%80%EF%BC%9A%EF%BC%882%EF%BC%89sin%5E2%28%CE%B1%2B%CE%B2%EF%BC%89-1+%E6%B1%82%E8%AF%81%EF%BC%9A%EF%BC%881%2Btan%CE%B1%EF%BC%89%5E2%2B%281%2Btan%CE%B1%29%5E2%3D2%2Fcos%CE%B1%5E2)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 19:34:13