document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=479093>Question 479093</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with this question:\r<BR>\n" );
document.write( "\n" );
document.write( "find the equation of the straight line: <BR>\n" );
document.write( "which passes through (-7,4) and makes an angle of 143(deg)8(min) with the X-axis.\r<BR>\n" );
document.write( "\n" );
document.write( "I know the equation will look like either ax+by=c or y=mx+n<BR>\n" );
document.write( "and i understand y-y1=m(x-x1) = y-4=m(x+7)\r<BR>\n" );
document.write( "\n" );
document.write( "how do you convert the angle (143.133) to =m?<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #328291 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=328291\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  y=m*x + n will be the type of equation\r<BR>\n" );
document.write( "\n" );
document.write( "m the slope can be calculated by angle;<BR>\n" );
document.write( "m = tan(143.133)=-0.75<BR>\n" );
document.write( "tan(angle) * startPoint_X + n = startPoint_Y\r<BR>\n" );
document.write( "\n" );
document.write( "so n = startPoint_Y - (tan ( angle) * startPoint_X )<BR>\n" );
document.write( "n= 4-(-0.75*-7)<BR>\n" );
document.write( "n=5.25 <BR>\n" );
document.write( "y=-0.75x-5.25+4 <BR>\n" );
document.write( "y=-0.75x-1.25 is the required equation.<BR>\n" );
document.write( "Draw the line to check if the point lies on the derived line\r<BR>\n" );
document.write( "\n" );
document.write( "CHECK<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28500%2C500%2C-10%2C10%2C-10%2C10%2Ccircle%28-7%2C4%2C0.1%29%2Cgraph%28500%2C500%2C-10%2C10%2C-10%2C10%2Cy=-0.75x-1.25%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );