F(a)=sin(3π-a)乘以COS(a+5π)/COS(a-3π)乘以tan(a-4π)化简!
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F(a)=sin(3π-a)乘以COS(a+5π)/COS(a-3π)乘以tan(a-4π)化简!
F(a)=sin(3π-a)乘以COS(a+5π)/COS(a-3π)乘以tan(a-4π)化简!
F(a)=sin(3π-a)乘以COS(a+5π)/COS(a-3π)乘以tan(a-4π)化简!
F(a)=sin(3π-a)乘以COS(a+5π)/COS(a-3π)乘以tan(a-4π)
=sina(-cosa)/(-cosa)tana
=sinacosa/sina
=cosa
sin(3π-a)cos(a+5π)/cos(a-3π)tan(a-4π)
=sina(-cosa)/-cosa(sina/cosa)
=sinacos/sina
=cosa
这是我在静心思考后得出的结论,
如果能帮助到您,希望您不吝赐我一采纳~(满意回答)
如果不能请追问,我会尽全力帮您解决的~
答题不易,如果您有所不满愿意,请谅解~...
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sin(3π-a)cos(a+5π)/cos(a-3π)tan(a-4π)
=sina(-cosa)/-cosa(sina/cosa)
=sinacos/sina
=cosa
这是我在静心思考后得出的结论,
如果能帮助到您,希望您不吝赐我一采纳~(满意回答)
如果不能请追问,我会尽全力帮您解决的~
答题不易,如果您有所不满愿意,请谅解~
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