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Tiếng ViệtCircles and PiArcs
Now we can rearrange these equations to find whichever variable we’re interested in. For example,
| arc length | = | |
| = |
| sector area | = | |
| = |
where r is the radius of the circle, and c is the size of the central angle.
Now we can rearrange these equations to find whichever variable we’re interested in. For example,
| arc length | = | |
| = |
| sector area | = | |
| = |
where r is the radius of the circle, and c is the size of the central angle.