document.write( "Question 919033: Use sin of theta = -8/17
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document.write( "and theta lies on quadrant III\r
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document.write( "find the exact value of a) sin 2 theta b) cos 2 theta c) tan 2 theta\r
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document.write( "help explain please so I can have one example to work from \r
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document.write( "thank you \n" );
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Algebra.Com's Answer #557447 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Use sin of theta = -8/17 \n" ); document.write( "and theta lies on quadrant III\r \n" ); document.write( "\n" ); document.write( "find the exact value of a) sin 2 theta \n" ); document.write( "---- \n" ); document.write( "Find the cos(theta) = sqrt(1 - sin^2) \n" ); document.write( "cos is negative in Q3 \n" ); document.write( "- \n" ); document.write( "Then sin(2t) = 2sin(t)cos(t) \n" ); document.write( "----- \n" ); document.write( "b) cos 2 theta \n" ); document.write( "Then cos(2t) = sqrt(1 - sin^2(2t)) \n" ); document.write( "------------- \n" ); document.write( "c) tan 2 theta \n" ); document.write( "tan(2t) = sin(2t)/cos(2t) \n" ); document.write( "================== \n" ); document.write( " \n" ); document.write( " |