document.write( "Question 1058235: Cos^-1 (Sin π/8) \n" ); document.write( "
Algebra.Com's Answer #673288 by Alan3354(69443)\"\" \"About 
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Cos^-1 (Sin pi/8)
\n" ); document.write( "sin(pi/8) = cos(pi/2 - pi/8) = cos(3pi/8)
\n" ); document.write( "--> 3pi/8
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