已知α是第二象限角,化简:√1+2sinα(5π-α)*(α-π)/sin(α-2分之3π)-√1-sin²(2分之3派+α):√1+2sinα(5π-α)*cos(α-π)—————————————————— = sin(α-2分之3π)-√1-sin²(2分之3派
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 07:11:49
![已知α是第二象限角,化简:√1+2sinα(5π-α)*(α-π)/sin(α-2分之3π)-√1-sin²(2分之3派+α):√1+2sinα(5π-α)*cos(α-π)—————————————————— = sin(α-2分之3π)-√1-sin²(2分之3派](/uploads/image/z/10142314-34-4.jpg?t=%E5%B7%B2%E7%9F%A5%CE%B1%E6%98%AF%E7%AC%AC%E4%BA%8C%E8%B1%A1%E9%99%90%E8%A7%92%2C%E5%8C%96%E7%AE%80%3A%E2%88%9A1%2B2sin%CE%B1%285%CF%80-%CE%B1%29%2A%28%CE%B1-%CF%80%29%2Fsin%28%CE%B1-2%E5%88%86%E4%B9%8B3%CF%80%29-%E2%88%9A1-sin%26sup2%3B%EF%BC%882%E5%88%86%E4%B9%8B3%E6%B4%BE%2B%CE%B1%EF%BC%89%3A%E2%88%9A1%2B2sin%CE%B1%285%CF%80-%CE%B1%29%2Acos%28%CE%B1-%CF%80%29%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94+%3D+sin%28%CE%B1-2%E5%88%86%E4%B9%8B3%CF%80%29-%E2%88%9A1-sin%26%23178%3B%EF%BC%882%E5%88%86%E4%B9%8B3%E6%B4%BE)
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