document.write( "Question 1010805: (sec90 - tan90) \n" ); document.write( "

Algebra.Com's Answer #626288 by ikleyn(52915) $\"\"$ $\"About$

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\n" ); document.write( "It is very easy to answer this question.\r
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\n" ); document.write( "\n" ); document.write( "sec(90°) = $\"1%2Fcos%2890%5Eo%29\"$ is not defined, because cos(90°) = 0.\r
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\n" ); document.write( "\n" ); document.write( "tan(90°) = $\"sin%2890%5Eo%29%2Fcos%2890%5Eo%29\"$ is not defined, because cos(90°) = 0.\r
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\n" ); document.write( "\n" ); document.write( "Therefore, the expression sec(90°) - tan(90°) is not defined.\r
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\n" ); document.write( "\n" ); document.write( "Answer. The expression sec(90°) - tan(90°) is not defined.\r
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