已知α为锐角,且sin²α-sinαcosα-2cos²α=0 (1)求tanα的值 (2)求si已知α为锐角,且sin²α-sinαcosα-2cos²α=0(1)求tanα的值(2)求sin(α-π/3)的值求详解
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![已知α为锐角,且sin²α-sinαcosα-2cos²α=0 (1)求tanα的值 (2)求si已知α为锐角,且sin²α-sinαcosα-2cos²α=0(1)求tanα的值(2)求sin(α-π/3)的值求详解](/uploads/image/z/2620322-26-2.jpg?t=%E5%B7%B2%E7%9F%A5%CE%B1%E4%B8%BA%E9%94%90%E8%A7%92%2C%E4%B8%94sin%26%23178%3B%CE%B1-sin%CE%B1cos%CE%B1-2cos%26%23178%3B%CE%B1%3D0+%281%29%E6%B1%82tan%CE%B1%E7%9A%84%E5%80%BC+%282%29%E6%B1%82si%E5%B7%B2%E7%9F%A5%CE%B1%E4%B8%BA%E9%94%90%E8%A7%92%2C%E4%B8%94sin%26%23178%3B%CE%B1-sin%CE%B1cos%CE%B1-2cos%26%23178%3B%CE%B1%3D0%281%29%E6%B1%82tan%CE%B1%E7%9A%84%E5%80%BC%282%29%E6%B1%82sin%28%CE%B1-%CF%80%2F3%29%E7%9A%84%E5%80%BC%E6%B1%82%E8%AF%A6%E8%A7%A3)
已知α为锐角,且sin²α-sinαcosα-2cos²α=0 (1)求tanα的值 (2)求si已知α为锐角,且sin²α-sinαcosα-2cos²α=0(1)求tanα的值(2)求sin(α-π/3)的值求详解
已知α为锐角,且sin²α-sinαcosα-2cos²α=0 (1)求tanα的值 (2)求si
已知α为锐角,且sin²α-sinαcosα-2cos²α=0
(1)求tanα的值
(2)求sin(α-π/3)的值
求详解
已知α为锐角,且sin²α-sinαcosα-2cos²α=0 (1)求tanα的值 (2)求si已知α为锐角,且sin²α-sinαcosα-2cos²α=0(1)求tanα的值(2)求sin(α-π/3)的值求详解