Consider a 72° angle inscribed in the centre of a circle with radius 10cm. (a) What is the length of the arc length formed by this angle? (b) What is the area of the sector formed by this angle?

Algebra and Trigonometry (MindTap Course List)
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ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
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Chapter5: Trigonometric Functions: Right Triangle Approach
Section5.CR: Chapter Review
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Show your work clearly for the
following. Leave your answers in
exact form simplified as much as
possible.
Consider a 72° angle inscribed in the
centre of a circle with radius 10cm.
(a) What is the length of the arc
length formed by this angle?
(b) What is the area of the sector
formed by this angle?
Transcribed Image Text:Show your work clearly for the following. Leave your answers in exact form simplified as much as possible. Consider a 72° angle inscribed in the centre of a circle with radius 10cm. (a) What is the length of the arc length formed by this angle? (b) What is the area of the sector formed by this angle?
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