SOLUTION: Cos^-1 (Sin π/8)

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Question 1058235: Cos^-1 (Sin π/8)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Cos^-1 (Sin pi/8)
sin(pi/8) = cos(pi/2 - pi/8) = cos(3pi/8)
--> 3pi/8