document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=671744>Question 671744</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If csc x = 5,  90 degrees < x < 180 degrees.\r<BR>\n" );
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document.write( "a. sin (x/2) =?\r<BR>\n" );
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document.write( "b. cos (x/2) =?\r<BR>\n" );
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document.write( "c. tan (x/2) =?\r<BR>\n" );
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document.write( "So far I have sin = 1/5, but I have no idea what to do after.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #417749 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=417749\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If csc x = 5, 90 degrees < x < 180 degrees. <BR>\n" );
document.write( "a. sin (x/2) =? <BR>\n" );
document.write( "b. cos (x/2) =? <BR>\n" );
document.write( "c. tan (x/2) =?<BR>\n" );
document.write( "find exact values <BR>\n" );
document.write( "**<BR>\n" );
document.write( "sinx=1/cscx=1/5=opp side/hypotenuse<BR>\n" );
document.write( "adj side=&#8730;(5^2-1^2)=&#8730;(25-1)=&#8730;24<BR>\n" );
document.write( "cosx=-&#8730;24/5<BR>\n" );
document.write( "tanx=opp side/adj side=-1/&#8730;24<BR>\n" );
document.write( "you are working with a reference angle in quadrant II where sin is>0, cos<0, and tan<0<BR>\n" );
document.write( "..<BR>\n" );
document.write( "Identities: <BR>\n" );
document.write( "sin(x/2)=±&#8730;[(1-cosx)/2]<BR>\n" );
document.write( "=&#8730;[(1+&#8730;24/5)/2]<BR>\n" );
document.write( "=&#8730;[(5+&#8730;24)/5)/2]<BR>\n" );
document.write( "sin(x/2)=&#8730;[(5+&#8730;24)/10]<BR>\n" );
document.write( "..<BR>\n" );
document.write( "cos (x/2) =±&#8730;[(1+cosx)/2]<BR>\n" );
document.write( "=&#8730;[(1-&#8730;24/5)/2]<BR>\n" );
document.write( "=&#8730;[(5-&#8730;24/5)/2]<BR>\n" );
document.write( "=&#8730;[(5-&#8730;24)/10]<BR>\n" );
document.write( "..<BR>\n" );
document.write( "tan (x/2)=sinx/(1+cosx)<BR>\n" );
document.write( "=[(1/5)/(1-&#8730;24/5)]<BR>\n" );
document.write( "=1/(5-&#8730;24) </SPAN>\n" );
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