document.write( "Question 972316: Is -11pi/4 in the third quadrant? And would the reference angle be 15pi/4? Thanks \n" ); document.write( "
Algebra.Com's Answer #594669 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Is -11pi/4 in the third quadrant? \n" ); document.write( "======= \n" ); document.write( "-11pi/4 = -8pi/4 - 3pi/4 = -3pi/4 is in QIII \n" ); document.write( "=====================\r \n" ); document.write( "\n" ); document.write( "And would the reference angle be 15pi/4? Thanks \n" ); document.write( "No. The reference angle is always an acute angle in QI \n" ); document.write( "It is the acute angle between the given angle and \n" ); document.write( "the closest part of the x-axis. \n" ); document.write( "--- \n" ); document.write( "The reference angle is pi/4 \n" ); document.write( "---------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------------- \n" ); document.write( " |