document.write( "Question 1153470: -1/(csc(-theta)) - (cot(-theta))/(sec(-theta)) = csc(theta) \n" ); document.write( "
Algebra.Com's Answer #775727 by greenestamps(13203)\"\" \"About 
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\n" ); document.write( "Simplify the first term on the left by expressing everything in sin(x) and cos(x), and using sin(-x) = -sin(x):

\n" ); document.write( "\"-1%2Fcsc%28-x%29+=+-sin%28-x%29+=+-%28-sin%28x%29%29+=+sin%28x%29\"

\n" ); document.write( "Similarly, simplify the second term on the left:

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\n" ); document.write( "The expression on the left is now

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\n" ); document.write( "Combine terms using a common denominator and use sin^2(x)+cos^2(x)=1:

\n" ); document.write( "\"%28sin%5E2%28x%29%2Bcos%5E2%28x%29%29%2Fsin%28x%29+=+1%2Fsin%28x%29+=+csc%28x%29\"

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