document.write( "Question 1153470: -1/(csc(-theta)) - (cot(-theta))/(sec(-theta)) = csc(theta) \n" ); document.write( "
Algebra.Com's Answer #775723 by MathLover1(20850)\"\" \"About 
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manipulate left side\r
\n" ); document.write( "\n" ); document.write( "\"-1%2Fcsc%28-theta%29+-+%28cot%28-theta%29%2Fsec%28-theta%29%29\".........since \"csc%28-theta%29+=-csc%28theta%29\",\"cot%28-theta%29=-cot%28theta%29\", and \"sec%28-theta%29=sec%28theta%29\"....common denominator is \"-csc%28theta%29sec%28theta%29\",\r
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\n" ); document.write( "\n" ); document.write( "=\"-1%2F%28-csc%28theta%29%29+-+%28-cot%28theta%29%2Fsec%28theta%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "=\"1%2Fcsc%28theta%29%2Bcot%28theta%29%2Fsec%28theta%29\"\r
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\n" ); document.write( "\n" ); document.write( "=\r
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\n" ); document.write( "\n" ); document.write( "=\"%28sec%28theta%29%2Bcot%28theta%29csc%28theta%29%29%2F%28csc%28theta%29sec%28theta%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "express all with \"sin%28theta%29+\"and \"cos%28theta%29\":\r
\n" ); document.write( "\n" ); document.write( "\"sec%28theta%29=1%2Fcos%28theta%29\"
\n" ); document.write( "\"csc%28theta%29=1%2Fsin%28theta%29+\"
\n" ); document.write( "\"cot%28theta%29=cos%28theta%29%2Fsin%28theta%29+\"\r
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\n" ); document.write( "\n" ); document.write( "=\r
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\n" ); document.write( "\n" ); document.write( "=....\"sin%5E2%28theta%29%2Bcos%5E2%28theta%29=1\"\r
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\n" ); document.write( "\n" ); document.write( "=\"%28sin%28theta%29%2Acos%28theta%29%29%2F%28cos%28theta%29%2Asin%5E2%28theta%29%29\"...simplify\r
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\n" ); document.write( "\n" ); document.write( "=\r
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\n" ); document.write( "\n" ); document.write( "=\"1%2Fsin%28theta%29\"........use identity \"csc%28theta%29=1%2Fsin%28theta%29+\"\r
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\n" ); document.write( "\n" ); document.write( "=\"csc%28theta%29\"\r
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