document.write( "Question 574298: Prove that:~\r
\n" ); document.write( "\n" ); document.write( "cotB + tanB = cotB sec^2B
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Algebra.Com's Answer #369023 by Alan3354(69443)\"\" \"About 
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Prove that:~\r
\n" ); document.write( "\n" ); document.write( "cotB + tanB = cotB sec^2B
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\n" ); document.write( "Multiply thru by tan(B)
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\n" ); document.write( "1 + tan^2 = sec^2
\n" ); document.write( "I'm convinced
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\n" ); document.write( "If you're not, multiply thru by cos^2
\n" ); document.write( "cos^2 + sin^2 = 1
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