document.write( "Question 860432: Given sin(alpha)=8/9 and alpha is in quadrant I, find the exact value of
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document.write( "sin(alpha/2).
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document.write( " Note: You are not allowed to use decimals in your answer.
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document.write( "sin(alpha/2)=? \n" );
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Algebra.Com's Answer #518444 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! 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]. \n" ); document.write( "----- \n" ); document.write( "If sin(a) = 8/9, cos(a) = sqrt[81-64]/9 = sqrt(17)/9 \n" ); document.write( "---- \n" ); document.write( "Ans: sin(a/2) = sqrt[1-[sqrt(17)/9]/2] \n" ); document.write( "======================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "======================= \n" ); document.write( " \n" ); document.write( " |