Ubahlah ukuran sudut berikut ke dalam derajat a) 11°3'8 b) 56°6'9 c) 78°4'11

1" = 1/60' , 1' = 1/60°

a) 21°3'8" = 21°3'(8/60)'
= 21°3'0,13' = 21°3,13'
= 21°(3,13/60)°
= 21°0,052° = 21,052°
b) 56°6'9" = 56°6'(9/60)'
= 56°6'0,15' = 56°6,15'
= 56°(6,15/60)°
= 56°0,1025°
= 56,1025°
c) 78°4'11" = 78°4'(11/60)'
= 78°4'0,183' = 78°4,183'
= 78°(4,183/60)°
= 78°0,0697°
= 78,0697°