Question

find the measure of supplement of an angle of 87°28'43" ​

Answer 1

we may write , 180°=179°59'60".

therefore, supplement of an angle of (87°28'43")

=an angle of [180°-(87°28'43")]

an angle of [179°59'60"-87°28'43"]

=an angle of (92°31'17").

hence the measure of the required angle =(92°31'17").