SOLUTION: How do you find the exact value of sin 23pi/4?
Algebra.Com
Question 592417: How do you find the exact value of sin 23pi/4?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
is the only way to exactly represent the number. Since 
is irrational, any decimal representation would be an approximation no matter how many places you carry it out.
John
My calculator said it, I believe it, that settles it
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