document.write( "Question 160567: prove cot^2(x)(sec^2(x)-1)=1 \n" ); document.write( "

Algebra.Com's Answer #118411 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"COT=COS%2FSIN\"$
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\n" ); document.write( " $\"COT%5E2%28SEC%5E2-1%29=%28COS%5E2%2FSIN%5E2%29%281%2FCOS%5E2-1%29\"$
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\n" ); document.write( " $\"COT%5E2%28SEC%5E2-1%29=1\"$ \r
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