Use 31416 for unless your calculator has a key marked Use a

Use 3.1416 for unless your calculator has a key marked .

Use a calculator to convert 121° 40\' to radians. Round your answer to the nearest hundredth. (First convert to decimal degrees, then multiply by the appropriate conversion factor to convert to radians.)

Solution

1°=60\'

=>1\'=(1_/60)°

1°=(_/180)radians

121° 40\' = (121+(40_/60))°

121° 40\' = (7300_/60)°

121° 40\' = (365_/3)°

121° 40\' = (365_/3)*(_/180)radians

121° 40\' =2.12radians