document.write( "Question 1011253: Prove the identify : cosM cosN - sin M sin N / sin M cos N + sin N cos M = cot M cot N - 1 / cot M +cot N \n" ); document.write( "

Algebra.Com's Answer #627283 by Alan3354(69443) $\"\"$ $\"About$

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Prove the identify [sic] : cosM cosN - sin M sin N / sin M cos N + sin N cos M = cot M cot N - 1 / cot M +cot N
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\n" ); document.write( "Add some parentheses to clarify what's the numerator and the denominator.
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