特殊角的弧度数是225°的不清楚的,我举个列吧:30°=π/6 60°=π/3 ……我还有一个问题哈:特殊角的三角函数值:135°和225°
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![特殊角的弧度数是225°的不清楚的,我举个列吧:30°=π/6 60°=π/3 ……我还有一个问题哈:特殊角的三角函数值:135°和225°](/uploads/image/z/1700973-45-3.jpg?t=%E7%89%B9%E6%AE%8A%E8%A7%92%E7%9A%84%E5%BC%A7%E5%BA%A6%E6%95%B0%E6%98%AF225%C2%B0%E7%9A%84%E4%B8%8D%E6%B8%85%E6%A5%9A%E7%9A%84%EF%BC%8C%E6%88%91%E4%B8%BE%E4%B8%AA%E5%88%97%E5%90%A7%EF%BC%9A30%C2%B0%3D%CF%80%2F6+60%C2%B0%3D%CF%80%2F3+%E2%80%A6%E2%80%A6%E6%88%91%E8%BF%98%E6%9C%89%E4%B8%80%E4%B8%AA%E9%97%AE%E9%A2%98%E5%93%88%EF%BC%9A%E7%89%B9%E6%AE%8A%E8%A7%92%E7%9A%84%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0%E5%80%BC%EF%BC%9A135%C2%B0%E5%92%8C225%C2%B0)
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