以知1+tan(θ+720°) / 1-tan(θ-360°) = 3+2根号2 求cos^2(π-θ)+sin(π+θ)*cos(π-θ)+2sin^2(θ-π)]* 1/cos^2(-θ-2π)的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/10 21:33:40
![以知1+tan(θ+720°) / 1-tan(θ-360°) = 3+2根号2 求cos^2(π-θ)+sin(π+θ)*cos(π-θ)+2sin^2(θ-π)]* 1/cos^2(-θ-2π)的值](/uploads/image/z/7138783-55-3.jpg?t=%E4%BB%A5%E7%9F%A51%2Btan%28%CE%B8%2B720%C2%B0%29+%2F+1-tan%28%CE%B8-360%C2%B0%29+%3D+3%2B2%E6%A0%B9%E5%8F%B72+%E6%B1%82cos%5E2%28%CF%80-%CE%B8%29%2Bsin%28%CF%80%2B%CE%B8%29%2Acos%28%CF%80-%CE%B8%29%2B2sin%5E2%28%CE%B8-%CF%80%29%5D%2A+1%2Fcos%5E2%28-%CE%B8-2%CF%80%29%E7%9A%84%E5%80%BC)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/10 21:33:40