(sin1°)^2+(sin2°)^2+…(sin88°)^2+(sin99°)^2+(sin90°)^2=?我算到一半,算不下去了只剩(sin1°)^2+(sin90°)^2+44+1/2
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 18:49:28
![(sin1°)^2+(sin2°)^2+…(sin88°)^2+(sin99°)^2+(sin90°)^2=?我算到一半,算不下去了只剩(sin1°)^2+(sin90°)^2+44+1/2](/uploads/image/z/5191663-31-3.jpg?t=%28sin1%C2%B0%29%5E2%2B%28sin2%C2%B0%29%5E2%2B%E2%80%A6%28sin88%C2%B0%29%5E2%2B%28sin99%C2%B0%29%5E2%2B%28sin90%C2%B0%29%5E2%3D%3F%E6%88%91%E7%AE%97%E5%88%B0%E4%B8%80%E5%8D%8A%2C%E7%AE%97%E4%B8%8D%E4%B8%8B%E5%8E%BB%E4%BA%86%E5%8F%AA%E5%89%A9%28sin1%C2%B0%29%5E2%2B%28sin90%C2%B0%29%5E2%2B44%2B1%2F2)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 18:49:28