cotθ,tanθ\cot \theta, \tan \thetacotθ,tanθ
−cotθ,−tanθ-\cot \theta,-\tan \theta−cotθ,−tanθ
−tanθ,−cotθ-\tan \theta,-\cot \theta−tanθ,−cotθ
tanθ,cotθ\tan \theta, \cot \thetatanθ,cotθ