Question

Calculando a diferença entre 100º e 40º35’ obtemos:

a)49º25’ b)50º25’ c)59º25’ d)50º45’ e)nra​

Answer 1

$100^\circ~-~40^\circ35'~=~\\\\\\=~99^\circ+1^\circ~-~40^\circ35'\\\\\\=~99^\circ+60'~-~40^\circ35'\\\\\\=~(99-40)^\circ~+~(60-35)'\\\\\\=~\boxed{59^\circ25'}$