Published by:
CGP EDU Academic Team
Published on: August 11, 2026
If 
be a regular pentagon inscribed in a unit circle. Then, 
is equal to
A
1
B
3
C
4
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Polygon Chord Formula
In a unit circle ( 
), the chord length is 
For side 
, center angle is 
For diagonal 
, center angle is 
Calculate Product
Substitute Standard Values
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