document.write( "Question 744514: Prove the following identity:
\n" ); document.write( "2 sec^2 = 1/1- sin x + 1/1+ sin x,
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Algebra.Com's Answer #453534 by lwsshak3(11628)\"\" \"About 
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Prove the following identity:
\n" ); document.write( "2 sec^2 = 1/1- sin x + 1/1+ sin x,
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\n" ); document.write( "\"2sec%5E2%28x%29=1%2F%281-sin%28x%29%29%2B1%2F%281%2Bsin%28x%29%29\"
\n" ); document.write( "start with right side
\n" ); document.write( "\"1%2F%281-sin%28x%29%29%2B1%2F%281%2Bsin%28x%29%29\"
\n" ); document.write( "LCD:(1+sin(x))(1+sin(x))=1-sin^2(x)
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\n" ); document.write( "verified: right side=left side
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