A Geometric Limit Problem

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The following constitutes a popular problem in calculus courses. Consider the sector of a unit circle with angle with the measurements as shown above. Let
be the area of triangle
, while
is the area of the curved shape
. What is the limit of the ratio
as the angle
approaches 0? The answer is 3/4. The ratio
takes the value
when
and
when
.
Contributed by: Jaime Rangel-Mondragon (August 2012)
Open content licensed under CC BY-NC-SA
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Details
Reference
[1] D. N. Adler, "Some Extensions of a Ubiquitous Geometric Limit Problem," The College Mathematics Journal, 27(4), 1996 pp. 290–291. maa.org/sites/default/files/0746834242060.di020773.02p0249o.pdf.
Permanent Citation
"A Geometric Limit Problem"
http://demonstrations.wolfram.com/AGeometricLimitProblem/
Wolfram Demonstrations Project
Published: August 6 2012