document.write( "Question 721544: Find all radian solutions to -2cos2(theta) -5sin(theta) +3=0 where 0<= theta <= 2pi \n" ); document.write( "
Algebra.Com's Answer #442424 by nshah11(47)![]() ![]() ![]() You can put this solution on YOUR website! Let theta = t for simplicity.\r \n" ); document.write( "\n" ); document.write( "-2cos(2t) - 5sin(t) + 3 = 0\r \n" ); document.write( "\n" ); document.write( "-2(1 - 2sin^2(t)) - 5sin(t) + 3 = 0\r \n" ); document.write( "\n" ); document.write( "4sin^2(t) - 5sin(t) + 1 = 0\r \n" ); document.write( "\n" ); document.write( "4sin^2(t) - 4sin(t) - sin(t) + 1 = 0\r \n" ); document.write( "\n" ); document.write( "(4sin(t) - 1)(sin(t) - 1) = 0\r \n" ); document.write( "\n" ); document.write( "t = 0.253, 2.89, pi/2 \n" ); document.write( " |