document.write( "Question 855384: Find the number of solutions of sin theta + 2 cos theta =0 over the interval [-pi,pi/2].
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Algebra.Com's Answer #515302 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find the number of solutions of \n" ); document.write( "sin theta + 2 cos theta =0 \n" ); document.write( "over the interval [-pi,pi/2]. \n" ); document.write( "---- \n" ); document.write( "Divide thru by cos(t) to get: \n" ); document.write( "tan(t) + 2 = 0 \n" ); document.write( "tan(t) = -2 \n" ); document.write( "------ \n" ); document.write( "t = arctan(-2) = -1.1070 in QIV \n" ); document.write( "----------------- \n" ); document.write( "t = -1.1070+pi = 2.0344 in QII \n" ); document.write( "------------------------------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================== \n" ); document.write( " |