document.write( "Question 1112880: Solve 3sin^2x + 2cosx + 1 = 0. For x is less than or equal to 360 \n" ); document.write( "
Algebra.Com's Answer #727908 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Solve 3sin^2x + 2cosx + 1 = 0. For x <= 360 \n" ); document.write( "----- \n" ); document.write( "Sub 1 - cos^2(x) for sin^2(x) \n" ); document.write( "--> a quadratic in cos(x) \n" ); document.write( "Solve for cosine, sub u for cos(x) if that is helpful. \n" ); document.write( "Solve for x. \n" ); document.write( " |