![\"\"](\"/images/stars/stars-13.gif\")
You can put this solution on YOUR website!
\n" ); document.write( "The general technique for solving an equation involving cos(x) and sin^2(x) is to replace sin^2(x) with 1-cos^2(x) to obtain a \"quadratic\" equation with cos(x) as the \"variable\"; then try to solve by factoring.
\n" ); document.write( "Similarly, if an equation involves sin(x) and cos^2(x), you would get a quadratic in sin(x) by replacing cos^2(x) with 1-sin^2(x).
\n" ); document.write( "Unfortunately, in this example the resulting quadratic in cos(x) does NOT factor, making it necessary to solve using a calculator.
\n" ); document.write( "Then, since you have to use a calculator to solve the problem after converting the original equation into a quadratic in cos(x), you might as well just solve the original equation using a calculator.
\n" ); document.write( " \n" ); document.write( "