document.write( "Question 860432: Given sin(alpha)=8/9 and alpha is in quadrant I, find the exact value of
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Algebra.Com's Answer #518444 by stanbon(75887)\"\" \"About 
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Given sin(alpha)=8/9 and alpha is in quadrant I, find the exact value of
\n" ); document.write( "sin(alpha/2) = sqrt[(1-cos(a))/2].
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\n" ); document.write( "If sin(a) = 8/9, cos(a) = sqrt[81-64]/9 = sqrt(17)/9
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\n" ); document.write( "Ans: sin(a/2) = sqrt[1-[sqrt(17)/9]/2]
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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