document.write( "Question 1030473: I have to find the exact value for this trigonometric expression. Help? :(
\n" ); document.write( "cos (sin^-1 (1/4)) = ??
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Algebra.Com's Answer #645338 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
Draw a triangle such that the sine of an angle is 1/4. Then the adjacent side is sqrt(16-1) = sqrt(15).
\n" ); document.write( "The cosine of that same angle is sqrt(15)/4.
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