document.write( "Question 968427: sec(A)+1)/(sec(A)-1)=cot^2(A/2) \n" ); document.write( "

Algebra.Com's Answer #591782 by lwsshak3(11628) $\"\"$ $\"About$

You can put this solution on YOUR website!
Prove:
\n" ); document.write( "sec(A)+1)/(sec(A)-1)=cot^2(A/2)
\n" ); document.write( " $\"%281%2Fcos%28A%29%2B1%29%2F%281%2Fcos%28A%29-1%29\"$
\n" ); document.write( " $\"%281%2Bcos%28A%29%29%2F%281-cos%28A%29%29\"$
\n" ); document.write( "

\n" ); document.write( "verified: left side=right side
\n" ); document.write( "note: $\"cos%28A%2F2%29=sqrt%28%281%2Bcos%28A%29%29%2F2%29\"$
\n" ); document.write( " $\"sin%28A%2F2%29=sqrt%28%281-cos%28A%29%29%2F2%29\"$ \n" ); document.write( "

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