document.write( "Question 455707: prove:
\n" ); document.write( " 2-cos^2x = 1+sin^2x \n" ); document.write( "

Algebra.Com's Answer #312856 by stanbon(75887) $\"\"$ $\"About$

You can put this solution on YOUR website!
prove:
\n" ); document.write( "2-cos^2x = 1+sin^2x
\n" ); document.write( "------
\n" ); document.write( "Add cos^2 to both sides
\n" ); document.write( "Subtract 1 from both sides:
\n" ); document.write( "sin^2 + cos^2 = 1
\n" ); document.write( "1 = 1
\n" ); document.write( "-----------------------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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