- #1

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## Main Question or Discussion Point

Does anyone have any idea how to find the length of a circle (theta)=pi/2 on the unit sphere. I am just not 100% sure on what sort of parameterisation should be used. Thanks

- Thread starter whattttt
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- #1

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Does anyone have any idea how to find the length of a circle (theta)=pi/2 on the unit sphere. I am just not 100% sure on what sort of parameterisation should be used. Thanks

- #2

mathwonk

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you might try just finding its radius.

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