Question

calcule a subtração dos ângulos:
30°-18° 10'

alguem ajuda nessa??

Answer 1

$30^{\circ}-18^{\circ}10'\\ \\ =\left(29+1 \right )^{\circ}-18^{\circ}10'\\ \\ =29^{\circ}60'-18^{\circ}10'\\ \\ =\left(29-18 \right )^{\circ}+\left(60-10 \right )'\\ \\ =11^{\circ}50'\\ \\ \\ \boxed{30^{\circ}-18^{\circ}10'=11^{\circ}50'}$