tan−1(34)\tan ^{-1}\left(\frac{\sqrt{3}}{4}\right)tan−1(43)
tan−1(337)\tan ^{-1}\left(\frac{3 \sqrt{3}}{7}\right)tan−1(733)
tan−1(34+33)\tan ^{-1}\left(\frac{3}{4+3 \sqrt{3}}\right)tan−1(4+333)
tan−1(13+3)\tan ^{-1}\left(\frac{1}{3+\sqrt{3}}\right)tan−1(3+31)