document.write( "Question 832149: Verify trigonometric identities
\n" ); document.write( "1-sinx/1+sinx=sec^2x-2secxtanx+tan^2x \n" ); document.write( "

Algebra.Com's Answer #502489 by lwsshak3(11628) $\"\"$ $\"About$

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Verify trigonometric identities
\n" ); document.write( "1-sinx/1+sinx=sec^2x-2secxtanx+tan^2x
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\n" ); document.write( "start with left side:
\n" ); document.write( " $\"%281-sin%28x%29%29%2F%281%2Bsin%28x%29%29\"$
\n" ); document.write( " $\"%28%281-sin%28x%29%29%2F%281%2Bsin%28x%29%29%29%28%281-sin%28x%29%29%2F%281-sin%28x%29%29%29\"$
\n" ); document.write( " $\"%281-2sin%28x%29%2Bsin%5E2%28x%29%29%2F%281-sin%5E2%28x%29%29\"$
\n" ); document.write( " $\"%281-2sin%28x%29%2Bsin%5E2%28x%29%29%2F%28cos%5E2%28x%29%29\"$
\n" ); document.write( "

\n" ); document.write( " $\"%28sec%5E2%28x%29%29-%282sin%28x%29%2Fcos%5E2%28x%29%29%2B%28tan%5E2%28x%29%29\"$
\n" ); document.write( " $\"sec%5E2%28x%29-2%281%2Fcos%28x%29%29%28sin%28x%29%2Fcos%28x%29%29%2Btan%5E2%28x%29%29\"$
\n" ); document.write( " $\"sec%5E2%28x%29-2sec%28x%29tan%28x%29%2Btan%5E2%28x%29\"$
\n" ); document.write( "verified: left side=right side
\n" ); document.write( " \n" ); document.write( "

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