Question

a) 21°37'42" +18°40'30"​

Answer 1

Resposta:

$\textsf{Leia abaixo}$

Explicação passo a passo:

$\Large\boxed{\begin{array}{I}\tt\mathsf{21\textdegree\:37'\:42''}\\+\\\mathsf{18\textdegree\:40'\:30''} \\=\\\mathsf{40\textdegree\:18'\:12''}\end{array}}}$