document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=135913>Question 135913</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find all exact solutions of the equation:<BR>\n" );
document.write( " 2sinx+1=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #99609 by </B><A HREF=/tutors/aboutme.mpl?userid=nycsharkman><B>nycsharkman(136)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nycsharkman><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=99609\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all exact solutions of the equation:<BR>\n" );
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document.write( "2sinx + 1 = 0\r<BR>\n" );
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document.write( "A trig equation will have exactly ONE ANSWER for each inverse function you use to solve it; an answer in exact form provides only those restricted range angles, nothing more.\r<BR>\n" );
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document.write( "Back to your question.\r<BR>\n" );
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document.write( "Treat this like a regular linear equation.  Do not allow the sine function to confuse you.\r<BR>\n" );
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document.write( "Subtract 1 from both sides.\r<BR>\n" );
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document.write( "Doing so, we get this:\r<BR>\n" );
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document.write( "2sinx = -1\r<BR>\n" );
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document.write( "Divide both sides by 2.\r<BR>\n" );
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document.write( "sinx = -(1/2)\r<BR>\n" );
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document.write( "In the unit circle, we are given two answers for sinx = -(1/2).\r<BR>\n" );
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document.write( "x = 210 degrees AND 330 degrees\r<BR>\n" );
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document.write( "Is this clear?\r<BR>\n" );
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document.write( "NOTE: Trig will be much more pleasant if you take time out to memorize the unit circle degree and radian measures.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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