document.write( "Question 1110426: What is the degree - measure of the least positive angle x such that \"+log+2+%28cosx%29=-1%2F2+\" (base 2). \n" ); document.write( "
Algebra.Com's Answer #725411 by ikleyn(52932)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "
\r\n" );
document.write( "\"log%282%2C%28cos%28x%29%29%29\" = \"-1%2F2\"   <==== is equivalent to  ====>\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "cos(x) = \"2%5E%28-0.5%29\" = \"1%2Fsqrt%282%29\" = \"sqrt%282%29%2F2\"   <=== ===>\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "x = \"pi%2F4\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Answer.   The least positive angle x such that  \"log%282%2C%28cos%28x%29%29%29\" = \"-1%2F2\"   is  x = \"pi%2F4\",  or  45 degrees.\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );