Question

Sendo x=15°35'40" e y=25°40'50", calcule 3x - 2y

Answer 1

x = 40" + 35 x 60" + 15 x 3600" = 40 + 2100 + 54000 = 56140"
3x = 3 x 56140 = 168420"

y = 50" + 40 x 60" + 25 x 3600" = 50 + 2400 + 90000 = 92450"
2y = 2 x 92450 = 184900"

3x -2y = 168420 - 184900 = -16480" = -04° 34' 40"