Supplementary angle = \(180\degree - \) given angle
(i) Supplement of \(105\degree = 180\degree -105\degree = 75\degree\)
(ii) Supplement of \(87\degree = 180\degree - 87\degree = 93\degree\)
(iii) Supplement of \(154\degree = 180\degree - 154\degree = 26\degree\)
Read more: Supplementary and Complementary Angles