document.write( "Question 1031206: Determine cos2x if sin^(4)x = 25/36 when 0 < x < π/2 \n" ); document.write( "

Algebra.Com's Answer #645938 by ikleyn(52839) $\"\"$ $\"About$

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\n" ); document.write( "Determine cos2x if sin^(4)x = 25/36 when 0 < x < π/2
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document.write( "If   = ,  then   =   and \r\n" );
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document.write( " =  =  =  =  =  = .\r\n" );
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document.write( "The info 0 < x <   is irrelevant.\r\n" );
document.write( "It is not used in the solution, and the solution/the answer does not depend on this condition.\r\n" );
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