document.write( "Question 1119399: proving compound angle formula
\n" ); document.write( "a) tan(x+45)-tan(x-45)= 4tanx/1-tan^2x\r
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\n" ); document.write( "\n" ); document.write( "b) sin(x-30)-cos(x+60)=square root 3sinx-cos x\r
\n" ); document.write( "\n" ); document.write( "plz help me am stuck thx lots \n" ); document.write( "

Algebra.Com's Answer #734977 by AnlytcPhil(1807) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "one must have been.  The sign between the terms in the\r\n" );
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document.write( "Edwin (aka AnlytcPhil)

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