document.write( "Question 1039442: Find all values of 't' in the interval [0, 2pi] that satisfy 2cos't'+1=0 \n" ); document.write( "
Algebra.Com's Answer #654170 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! that is 2 cos t= -1 \n" ); document.write( "cos t= (-1/2) \n" ); document.write( "That occurs in the 2nd and third quadrants. \n" ); document.write( "That is at pi/3 and 2 pi/3 \n" ); document.write( " |