tan−1(0.015)\tan ^{-1}(0.015)tan−1(0.015)
tan−1(0.115)\tan ^{-1}(0.115)tan−1(0.115)
tan−1(0.15)\tan ^{-1}(0.15)tan−1(0.15)
tan−1(0.215)\tan ^{-1}(0.215)tan−1(0.215)