An angle of 1º can be divided into 60 equal parts.
Each of these parts is known as 1 minute (1').
So 60' = 1º
An angle of 1' can be divided into 60 equal parts.
Each of these parts is known as 1 second (1").
So 60" = 1' and 3600" = 1º
Example
Convert 42º 14' 32" into an angle in decimal format to 2 decimal places.
Answer
14' = 14/60 degrees.
32" = 32/3600 degrees.
Use a calculator to work out:
42 + 14 ÷ 60 + 32 ÷ 3600
So 42º 14' 32" = 42.24222222º... = 42.24º (to 2 dp)
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