document.write( "Question 982958: Express the trigonometric function in terms of its positive acute reference angle.\r
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document.write( "cos298°= \n" );
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Algebra.Com's Answer #603759 by Edwin McCravy(20063) You can put this solution on YOUR website! \r\n" ); document.write( "The red arc indicates the angle 298°, the green arc indicates the reference angle\r\n" ); document.write( "62°. Since the angles in the 4th quadrant are positive cos(298°) = +cos(62°).\r\n" ); document.write( "\r\n" ); document.write( "[But sin(298°) = -sin(62°), and tan(298°) = -tan(62°), because they are negative\r\n" ); document.write( "in the 4th quadrant.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\n" ); document.write( " |