document.write( "Question 195859: Prove that (1 - sin 2x)/(cos 2x)=(cos 2x)/(1 + sin 2x)
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Algebra.Com's Answer #146863 by Alan3354(69443) $\"\"$ $\"About$

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Prove that (1 - sin 2x)/(cos 2x)=(cos 2x)/(1 + sin 2x)
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\n" ); document.write( "Cross multiply
\n" ); document.write( "(1-sin(2x))*(1+sin(2x)) = cos^2(2x)
\n" ); document.write( "1 - sin^2(2x) = cos^2(2x) That's an identity. \n" ); document.write( "

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