九年级《补充习题》 锐角三角函数我们知道,螺钉问题可以看作锐角三角函数计算问题,螺纹以一定的角度旋转上升,使得螺钉旋转时向前推进,问直径是6mm的螺钉,若每转1圈向前推进1.25mm,则螺
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![九年级《补充习题》 锐角三角函数我们知道,螺钉问题可以看作锐角三角函数计算问题,螺纹以一定的角度旋转上升,使得螺钉旋转时向前推进,问直径是6mm的螺钉,若每转1圈向前推进1.25mm,则螺](/uploads/image/z/8781887-47-7.jpg?t=%E4%B9%9D%E5%B9%B4%E7%BA%A7%E3%80%8A%E8%A1%A5%E5%85%85%E4%B9%A0%E9%A2%98%E3%80%8B+%E9%94%90%E8%A7%92%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0%E6%88%91%E4%BB%AC%E7%9F%A5%E9%81%93%2C%E8%9E%BA%E9%92%89%E9%97%AE%E9%A2%98%E5%8F%AF%E4%BB%A5%E7%9C%8B%E4%BD%9C%E9%94%90%E8%A7%92%E4%B8%89%E8%A7%92%E5%87%BD%E6%95%B0%E8%AE%A1%E7%AE%97%E9%97%AE%E9%A2%98%2C%E8%9E%BA%E7%BA%B9%E4%BB%A5%E4%B8%80%E5%AE%9A%E7%9A%84%E8%A7%92%E5%BA%A6%E6%97%8B%E8%BD%AC%E4%B8%8A%E5%8D%87%2C%E4%BD%BF%E5%BE%97%E8%9E%BA%E9%92%89%E6%97%8B%E8%BD%AC%E6%97%B6%E5%90%91%E5%89%8D%E6%8E%A8%E8%BF%9B%2C%E9%97%AE%E7%9B%B4%E5%BE%84%E6%98%AF6mm%E7%9A%84%E8%9E%BA%E9%92%89%2C%E8%8B%A5%E6%AF%8F%E8%BD%AC1%E5%9C%88%E5%90%91%E5%89%8D%E6%8E%A8%E8%BF%9B1.25mm%2C%E5%88%99%E8%9E%BA)
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