-(/2/2)+sine -1/4 (/2/2)+sin0 27. 2 r dr de – 2 r dr de -1/4 -1/2 -2л /3 с(1/2)+сos@ 47/3 (1/2)+cos e 28. 2 r dr do – 2 r dr de 0.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 22RE
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Each of the integrals or integral expressions in Exercises 27–28 represents the area of a region in the plane. Use polar coordinates to sketch the region and evaluate the expressions.

-(/2/2)+sine
-1/4
(/2/2)+sin0
27. 2
r dr de – 2
r dr de
-1/4
-1/2
-2л /3 с(1/2)+сos@
47/3
(1/2)+cos e
28. 2
r dr do – 2
r dr de
0.
Transcribed Image Text:-(/2/2)+sine -1/4 (/2/2)+sin0 27. 2 r dr de – 2 r dr de -1/4 -1/2 -2л /3 с(1/2)+сos@ 47/3 (1/2)+cos e 28. 2 r dr do – 2 r dr de 0.
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