document.write( "Question 176512: Please help me with this equation. I have to use Trig. Identities to solve it and i can't seem to get both sides to equal the same thing. Could you show me how to get there? \"+%28cot%5E2%28a%29%29%2F%28csc%5E2%28a%29-1%29=%281%2Bsin%28a%29%29%2F%28sin%28a%29%29+\" \n" ); document.write( "
Algebra.Com's Answer #131728 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
Please help me with this equation. I have to use Trig. Identities to solve it and i can't seem to get both sides to equal the same thing. Could you show me how to get there? \"+%28cot%5E2%28a%29%29%2F%28csc%5E2%28a%29-1%29=%281%2Bsin%28a%29%29%2F%28sin%28a%29%29+\"
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document.write( "This is not an identity. If it were it would be\r\n" );
document.write( "true for every angle a.\r\n" );
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document.write( "Suppose we had this right triangle:\r\n" );
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document.write( "Calculating its hypotenuse\r\n" );
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document.write( "\"c%5E2=a%5E2%2Bb%5E2\"\r\n" );
document.write( "\"c%5E2=3%5E2%2B4%5E2\"\r\n" );
document.write( "\"c%5E2=9%2B16\"\r\n" );
document.write( "\"c%5E2=25\"\r\n" );
document.write( "\"c=sqrt%2825%29\"\r\n" );
document.write( "\"c=5\"\r\n" );
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document.write( "Substituting the trig ratios from angle a from\r\n" );
document.write( "this triangle,\r\n" );
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document.write( "So it is not an identity.  Somebody made a typo,\r\n" );
document.write( "and it may very well have been the book publisher.\r\n" );
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document.write( "Edwin
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