设X1,X2是方程x²-xsin(π/5)-cos(π/5)=0的两根,则arctanx1+arctanx2的值是?
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![设X1,X2是方程x²-xsin(π/5)-cos(π/5)=0的两根,则arctanx1+arctanx2的值是?](/uploads/image/z/5350078-46-8.jpg?t=%E8%AE%BEX1%2CX2%E6%98%AF%E6%96%B9%E7%A8%8Bx%26%23178%3B-xsin%28%CF%80%2F5%29-cos%EF%BC%88%CF%80%2F5%EF%BC%89%3D0%E7%9A%84%E4%B8%A4%E6%A0%B9%2C%E5%88%99arctanx1%2Barctanx2%E7%9A%84%E5%80%BC%E6%98%AF%3F)
设X1,X2是方程x²-xsin(π/5)-cos(π/5)=0的两根,则arctanx1+arctanx2的值是?
设X1,X2是方程x²-xsin(π/5)-cos(π/5)=0的两根,则arctanx1+arctanx2的值是?
设X1,X2是方程x²-xsin(π/5)-cos(π/5)=0的两根,则arctanx1+arctanx2的值是?