Reply by HapHazzard

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Posted on Calculating ring segment lengths

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116 posts in 1471 days

#1 posted 08-21-2016 03:42 AM

Your formula looks right, except I don’t think you need the sum(), and spreadsheets usually use “[asterisk]” for multiplication, but I’m not sure what syntax your spreadsheet uses.In Excel it’d be 2[asterisk]rad[asterisk]sin(angle/2). Functions in Excel use parentheses for their arguments.

In mathspeak it would be c = 2r·sin(θ/2), or “two times the radius times the sine of half the angle.”

Note: Apparently this forum uses asterisks for bold text and bulleted lists. They don’t say what you’re supposed to use for asterisks; that’s why I’m using “[asterisk].”

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