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| Math Central | Quandaries & Queries |
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Question from Jonathan: If a cone has an angle of 22 degrees, when i place it flat on a surface, the new resulting central angle is now at 68.69123834, but how come when i saw it on my friend it say 68 degree and 40 minutes, what is this minute? |
Hi Jonathan,
Angles are sometimes measured in degrees, minutes and seconds. There are 60 minutes in a degree and 60 second in a minute. Hence 40 minutes is $\large \frac{40}{60} \normalsize = \large \frac{2}{3}$ of a degree.
Penny
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