若cos2a/sin(a-π/4)=k,a为第一象限角 则sina-cosa 的值为多少如上,求解答
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![若cos2a/sin(a-π/4)=k,a为第一象限角 则sina-cosa 的值为多少如上,求解答](/uploads/image/z/5408696-56-6.jpg?t=%E8%8B%A5cos2a%2Fsin%28a-%CF%80%2F4%29%3Dk%2Ca%E4%B8%BA%E7%AC%AC%E4%B8%80%E8%B1%A1%E9%99%90%E8%A7%92+%E5%88%99sina-cosa+%E7%9A%84%E5%80%BC%E4%B8%BA%E5%A4%9A%E5%B0%91%E5%A6%82%E4%B8%8A%2C%E6%B1%82%E8%A7%A3%E7%AD%94)
若cos2a/sin(a-π/4)=k,a为第一象限角 则sina-cosa 的值为多少如上,求解答
若cos2a/sin(a-π/4)=k,a为第一象限角 则sina-cosa 的值为多少
如上,求解答
若cos2a/sin(a-π/4)=k,a为第一象限角 则sina-cosa 的值为多少如上,求解答
若cos2a/sin(a-π/4)=k,a为第一象限角 则sina-cosa 的值为多少如上,求解答
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