cosαtan(2π+α)化简

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cosαtan(2π+α)化简cosαtan(2π+α)化简cosαtan(2π+α)化简cosαtan(2π+α)=cosαtanα=cosα(sinα/cosα)=sinα

cosαtan(2π+α)化简
cosαtan(2π+α)化简

cosαtan(2π+α)化简
cosαtan(2π+α)
=cosαtanα
=cosα(sinα/cosα)
=sinα