document.write( "Question 1099379: If cosx=-3/5, and x is in between 180 and 360 degrees, find the value of sinx \n" ); document.write( "
Algebra.Com's Answer #713817 by ikleyn(52847)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "
\r\n" );
document.write( ". . . then the angle x terminates in QIII, where sine is negative function, and \r\n" );
document.write( "\r\n" );
document.write( "sin(x) = \"-sqrt%281-cos%5E2%28x%29%29\" = \"-sqrt%281-%28-3%2F5%29%5E2%29\" = \"-sqrt%281-9%2F25%29\" = \"-sqrt%28%2825-9%29%2F25%29\" -= \"-sqrt%2816%2F25%29\" = \"-4%2F5\".\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );