admin百科知識 2022-02-13 3:45:31 化簡:(sin(α-3π)*cos(-α))(tan(α-5π)*cos^2(α-5π)*tan(4π-α))化簡:(sin(α-3π)*cos(-α))/(tan(α-5π)*cos^2(α-5π)*tan(4π-α))網友廻答：匿名網友tan(α-5π)*cos^2(α-5π)*tan(4π-α)= -tan^2α*cos^2α= -sin^2αsin(α-3π)*cos(-α)= -sinα*cosα原式= -sinα*cosα/(-sin^2α)= cotα db標簽 生活常識_百科知識_各類知識大全»化簡:(sin(α-3π)*cos(-α))(tan(α-5π)*cos^2(α-5π)*tan(4π-α))
admin*cos(-α))(tan(α-5π)*cos^2(α-5π)*tan(4π-α)).jpg "化簡:(sin(α-3π)*cos(-α))(tan(α-5π)*cos^2(α-5π)*tan(4π-α)),第1張")
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