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Sine-full Pi (Posted on 2007-11-14) Difficulty: 3 of 5
Show that:

sin(2*pi/7) + sin(4*pi/7) + sin(8*pi/7) = √7/2

Note: All the angles are in radians.

See The Solution Submitted by K Sengupta    
Rating: 2.3333 (3 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: My solution!K Sengupta2008-03-06 04:10:56
SolutionMy solution!Chesca Ciprian2007-11-15 16:11:31
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