document.write( "Question 980774: Simplify the expression cos2θ/cosθ+sinθ as much as possible. You must show work. \r
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document.write( "I started the problem by multiplying by cosθ-sinθ to cos2θ/cosθ+sinθ. Although, I do not know what to do next. Please help. \n" );
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Algebra.Com's Answer #601832 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! cos(2theta) = cos^2(theta) – sin^2(theta) = (cos(theta)+sin(theta)) * (cos(theta)-sin(theta)) \n" ); document.write( "************************************************************************* \n" ); document.write( "cos2θ/(cosθ+sinθ) = ((cos(theta)+sin(theta)) * (cos(theta)-sin(theta))) / (cos(theta)+sin(theta)) = \n" ); document.write( "cos(theta)-sin(theta) \n" ); document.write( " |