化简cos(α- 5π/3)+cos(α+13π/3)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/26 22:41:22
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cos(α+5π/12)cos(α+π/6)+cos(π/12-α)cos(π/3-α) 化简
cos^2α+cos^2(α+π/3)-cosαcos(α+π/3)化简
[sin(5π-α)cos(-π-α)]/[cos(α-π)cos(π/2+α)]化简
化简cos平方α+cos平方(α-π/3)+cos平方(α+π/3) 急、~
化简:cosα+cos(2π/3-α)+cos(2π/3+α)
化简:cos(-π-α)
cos^3(-π-α)
化简cos(α- 5π/3)+cos(α+13π/3)
化简cos(π/12-α)-根号3cos(5π/12+α)
求和:cos(0)+cos(α)+cos(2α)+cos(3α)+……cos(nα)
化简sin(π/2+α)cos(3π-α)tan(π+α)/cos(π/2-α)cos(-α-π)
化简{sin(π+α)^3cos(-α)cos(π+α)}/{tan(π+α)^3cos(-π-α)^2}
(1+sinα+cosα)*[sin(α/2)-cos(α/2)]/√(2+2cosα)化简 (3/2*π
化简cos(5/2π+α)
化简:cos(60-α)-cos(60+α)
化简cos(α-3π)
化简sin(α-2π)+sin(-a-3π)cos(α-3π)/cos(π-α)-cos(-π-α)cos(α-4π)
2sinα*cosα*cos(2π-α)+cos(π+2α)*cosα*tanα化简!