document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=29984>Question 29984</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the graph of y=tanA intersects the graph of y = -1 at?<BR>\n" );
document.write( "what is an intercept of y=3sin2x? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #16745 by </B><A HREF=/tutors/aboutme.mpl?userid=longjonsilver><B>longjonsilver(2297)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=longjonsilver><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/cgi-bin/show-face.mpl?user=longjonsilver><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=16745\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=tanA asking where is tanA=-1?\r<BR>\n" );
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document.write( "First, find where tanA=+1, since your calculator stores this value. You get A = 45degrees.\r<BR>\n" );
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document.write( "So, where is tan -ve? Answer is in the second and fourth quadrants, so we need the equivalent angle there:\r<BR>\n" );
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document.write( "180-45 --> 135degrees<BR>\n" );
document.write( "360-45 --> 315degrees\r<BR>\n" );
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document.write( "These are the 2 answers within the 0 to 360 degree range.\r<BR>\n" );
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document.write( "2. y = 3sin2x\r<BR>\n" );
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document.write( "--> 3sin2x = 0<BR>\n" );
document.write( "sin2x = 0<BR>\n" );
document.write( "2x = 0 or 180 or 360 or 540 or 720<BR>\n" );
document.write( "--> x = 0 or 90 or 180 or 270 or 360\r<BR>\n" );
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document.write( "These are the 5 answers within the 1 to 360 degree range.\r<BR>\n" );
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document.write( "Look at my Lesson on solving Trig equations to understand my method, if you are not sure.\r<BR>\n" );
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document.write( "Jon.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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