document.write( "Question 891508: I need help proving this trigonometric identity question
\n" ); document.write( "sinx+sinxcot^2x=cscx\r
\n" ); document.write( "\n" ); document.write( "I don't know what to do with that cot^2 in there, my booklet doesn't teach me! \r
\n" ); document.write( "\n" ); document.write( "Thank you for any help you can give! \n" ); document.write( "
Algebra.Com's Answer #539787 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "
\r\n" );
document.write( "Your booklet teaches you to replace cot(x) by \"cos%28x%29%2Fsin%28x%29\"\r\n" );
document.write( "So that means to replace cotē(x) by \"cos%5E2%28x%29%2Fsin%5E2%28x%29\"\r\n" );
document.write( "Try that.\r\n" );
document.write( "\"sin%28x%29%2Bsin%28x%29cot%5E2x=csc%28x%29\"\r\n" );
document.write( "\"sin%28x%29%2Bsin%28x%29%28cos%5E2%28x%29%2Fsin%5E2%28x%29%29\"\r\n" );
document.write( "\"sin%28x%29%2Bcross%28sin%28x%29%29%28cos%5E2%28x%29%2Fsin%5E%28cross%282%29%29%28x%29%29\"\r\n" );
document.write( "\"sin%28x%29%2Bcos%5E2%28x%29%2Fsin%28x%29\"\r\n" );
document.write( "\r\n" );
document.write( "Get a common denominator of sin(x):\r\n" );
document.write( "\r\n" );
document.write( "\"%28sin%5E2%28x%29%2Bcos%5E2%28x%29%29%2Fsin%28x%29\"\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\"1%2Fsin%28x%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"csc%28x%29\"\r\n" );
document.write( "\r\n" );
document.write( "Edwin
 \n" );
document.write( "
\n" );