tan−1(43)\tan ^{-1}\left(\frac{4}{3}\right)tan−1(34)
tan−1(34)\tan ^{-1}\left(\frac{3}{4}\right)tan−1(43)
tan−1(23)\tan ^{-1}\left(\frac{2}{3}\right)tan−1(32)
tan−1(5)\tan ^{-1}(5)tan−1(5)