Выразить в секундах; 1'; 1°; 1°1'; 4°3'; 10°; 10'.

1' = 60'';1° = 60' = 3600'';1°1' = 61' = 3600'' + 60'' = 3660'';4°3' = (4*3600)''+(3*60)'' = 14400'' + 180'' = 14580'';10° = (10*3600)'' = 36000'';10' = (10*60)'' = 600''