document.write( "Question 699988: (1/1-sinx)+(1/1+sinx)= 2cos \n" ); document.write( "

Algebra.Com's Answer #431668 by lwsshak3(11628) $\"\"$ $\"About$

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(1/1-sinx)+(1/1+sinx)= 2cos
\n" ); document.write( "start with left side:
\n" ); document.write( "(1/1-sinx)+(1/1+sinx)
\n" ); document.write( "=(1+sin+1-sin)/(1-sin)(1+sin)
\n" ); document.write( "=2/1-sin^2
\n" ); document.write( "=2/cos^2
\n" ); document.write( "LHS≠RHS \n" ); document.write( "

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