document.write( "Question 174476: solve this problem algaebraically 12. sin2xsinx=cosx \n" ); document.write( "

Algebra.Com's Answer #129474 by Alan3354(69443) $\"\"$ $\"About$

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sin2xsinx=cosx
\n" ); document.write( "-----------
\n" ); document.write( "sin(2x)sin(x) = cos(x)
\n" ); document.write( "Use sin(2x) = 2sin(x)cos(x)
\n" ); document.write( "2sin(x)cos(x)sin(x) = cos(x)
\n" ); document.write( " $\"2sin%5E2%28x%29+=+1\"$
\n" ); document.write( " $\"sin%5E2%28x%29+=+1%2F2\"$
\n" ); document.write( " $\"sin%28x%29+=+sqrt%282%29%2F2\"$
\n" ); document.write( "x = 45º, 135º\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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