来自毛德军的问题
几个三角函数问题1.已知函数y=αcos(2x+π/3)+3,x∈[0,π/2]的最大值为4,求实数α的值2.化简下列各式(1)【sin^3(π+α)cos(-α)cos(π-α)】/【tan^3(π+α)cos^3(-α-π)】+【cos(α+3π)sin^2(α+3π)cos^2(3π/2α)】/【ta
几个三角函数问题
1.已知函数y=αcos(2x+π/3)+3,x∈[0,π/2]的最大值为4,求实数α的值
2.化简下列各式
(1)【sin^3(π+α)cos(-α)cos(π-α)】/【tan^3(π+α)cos^3(-α-π)】+【cos(α+3π)sin^2(α+3π)cos^2(3π/2α)】/【tan(α+5π)tan(π+α)cos^3(π+α)】
(2){√[(1-sinx)/(1sinx)]-√[1sinx)/(1-sinx)]}{[√[(1-cosx)/(1cosx)]-√[1cosx)/(1-cosx)]}
化简第二个少了点东东:(2){√[(1-sinx)/(1+sinx)]-√[(1+sinx)/(1-sinx)]}{[√[(1-cosx)/(1+cosx)]-√[1+cosx)/(1-cosx)]}
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