document.write( "Question 1171886: 11. solve each of the following equations over all real numbers.
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document.write( "a. 2 cos x + squareroot3 = 0
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document.write( "b. 2sin^2 x - sin x - 1 = 0
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document.write( "c. sin(98t) + 2 = 1
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document.write( "d. 2sin^2 theta = 2 + cos2theta \n" );
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Algebra.Com's Answer #797049 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! cos x=-sqrt(3)/2 \n" ); document.write( "this occurs at (5/6)π=2πn and (7/6)π+/-2πn \n" ); document.write( "-------------- \n" ); document.write( "(2 sin x+1)(sin x -1)=0 \n" ); document.write( "sin x=1 and sin x=-1/2 \n" ); document.write( "π/2, 7π/6, 11π/6, with the +/-2πn \n" ); document.write( " \n" ); document.write( "------------ \n" ); document.write( "2 sin^2 x=2+(1-sin^2 x) \n" ); document.write( "3 sin^2x=3 \n" ); document.write( "sin^2x=1 \n" ); document.write( "x=π/2, and 3π/2 with +/-2πn \n" ); document.write( " |