Junior Cycle · Trigonometry Lesson 5 of 6

JCHL Trigonometry 5: Degrees, Minutes and seconds

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You’ll learn

  • An angle can be written as a decimal (57.51°) or in degrees, minutes and seconds (57° 30′ 36″). A minute is written ′ and a second is written ″
  • There are 60 seconds in a minute and 60 minutes in a degree — exactly like a clock
  • Use the °′″ button on your calculator to switch between the two forms
  • Rounding to the nearest minute: 30 seconds or more rounds UP (because 30 is half of 60)

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