Question

a) calcule : 20° 18' 43" + 25 45' 20" =
b) calcule: 91° -35° 49' 46" =

Answer 1

a)_ 20°18'43"
+25°45'20" = 45°63'63"
- 1'60" = 45°64'03"
' 1°60'
= 46°04'03"



b)_ 91°
35°49'46" = 91°60'60"
- 35°49'46" = 56°11'14"