document.write( "Question 807941: Find the exact values of theta on the interval [0degrees, 360 degrees) that make the following equation a true statement.\r
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document.write( "3 sin theta- 6 sin theta cos theta cos theta =0 \n" );
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Algebra.Com's Answer #486666 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Find the exact values of theta on the interval [0degrees, 360 degrees) that make the following equation a true statement. \n" ); document.write( "3 sin theta- 6 sin theta cos theta cos theta =0 \n" ); document.write( "*** \n" ); document.write( "use x for theta \n" ); document.write( " \n" ); document.write( "(3sinx)(1-2cos^2x)=0 \n" ); document.write( "(3sinx)(1-2(1-sin^2x)=0 \n" ); document.write( "(3sinx)(1-2+2sin^2x)=0 \n" ); document.write( "(3sinx)(-1+2sin^2x)=0 \n" ); document.write( ".. \n" ); document.write( "3sinx=0 \n" ); document.write( "x=0, 180˚ \n" ); document.write( ".. \n" ); document.write( "-1+2sin^2x)=0 \n" ); document.write( "sin^2x=1/2 \n" ); document.write( "sinx=±1/√2=±√2/2 \n" ); document.write( "x=45˚, 135˚, 225˚, 315˚\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |