sin → cos {\displaystyle \sin \rightarrow \cos }
tan → sec 2 {\displaystyle \tan \rightarrow \sec ^{2}}
sec → sec tan {\displaystyle \sec \rightarrow \sec \tan }
cos → − sin {\displaystyle \cos \rightarrow -\sin }
cot → − csc 2 {\displaystyle \cot \rightarrow -\csc ^{2}}
csc → − csc cot {\displaystyle \csc \rightarrow -\csc \cot }
