document.write( "Question 344829: Which of the following contains a false solution to the equation sinθ cotθ-cos^2 θ=0?\r
\n" ); document.write( "\n" ); document.write( "A. 90 degrees and 270 degrees
\n" ); document.write( "B. 0 degrees and 180 degrees
\n" ); document.write( "C. 0 degrees and 270 degrees
\n" ); document.write( "D. 90 degrees\r
\n" ); document.write( "\n" ); document.write( "Thank you, Thank you so much for your help!!!!! \n" ); document.write( "
Algebra.Com's Answer #246710 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "\"Sin%28theta%29Cot%28theta%29-Cos%5E2theta=0\"\r\n" );
document.write( "\r\n" );
document.write( "try A\r\n" );
document.write( "A. 90 degrees and 270 degrees\r\n" );
document.write( "\r\n" );
document.write( "\"Sin%28%2290%B0%22%29Cot%28%2290%B0%22%29-Cos%5E2\"\"%22%2890%B0%29%22=0\"\r\n" );
document.write( "\"1%2A0-0%5E2=0\"\r\n" );
document.write( "\"0=0\"\r\n" );
document.write( "\r\n" );
document.write( "\"Sin%28%22270%B0%22%29Cot%28%22270%B0%22%29-Cos%5E2\"\"%22%28270%B0%29%22=0\"\r\n" );
document.write( "\"-1%2A0-0%5E2=0\"\r\n" );
document.write( "\"0=0\"\r\n" );
document.write( "\r\n" );
document.write( "Those are true solutions.\r\n" );
document.write( "\r\n" );
document.write( "Try B\r\n" );
document.write( "B. 0 degrees and 180 degrees\r\n" );
document.write( "\r\n" );
document.write( "\"Sin%28%220%B0%22%29Cot%28%220%B0%22%29-Cos%5E2\"\"%22%280%B0%29%22=0\"\r\n" );
document.write( "\r\n" );
document.write( "Since \"Cot%28%220%B0%22%29\" is undefined, B is a false solution.\r\n" );
document.write( "No use to try 180°.\r\n" );
document.write( "\r\n" );
document.write( "Try C\r\n" );
document.write( "C. 0 degrees and 270 degrees\r\n" );
document.write( "\r\n" );
document.write( "\"Sin%28%220%B0%22%29Cot%28%220%B0%22%29-Cos%5E2\"\"%22%280%B0%29%22=0\"\r\n" );
document.write( "\r\n" );
document.write( "Since \"Cot%28%220%B0%22%29\" is undefined, C is a false solution.\r\n" );
document.write( "Even though 270° is a solution, as we saw in A, 0° is not.\r\n" );
document.write( "\r\n" );
document.write( "Try D\r\n" );
document.write( "D. 90 degrees\r\n" );
document.write( "\r\n" );
document.write( "We saw in part A that 90° is a solution. \r\n" );
document.write( "\r\n" );
document.write( "B and C are the only ones which contain a false solution.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );