document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=869666>Question 869666</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using sum or difference formulas, find the exact value of sin(195&#8728;). Express your answer in the form sin(195degrees)=a&#8730;(1&#8722;&#8730;b)/4 for some numbers a and b. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524341 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=524341\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Using sum or difference formulas, find the exact value of sin(195&#8728;). Express your answer in the form sin(195degrees)=a&#8730;(1&#8722;&#8730;b)/4 for some numbers a and b.<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "sin(195) = sin(150+45) = sin(150)*cos(45)+cos(150)*sin(45)<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Note: sin(150) = sin(30) = 1/2<BR>\n" );
document.write( "cos(150) = -cos(30) = -sqrt(3)/2<BR>\n" );
document.write( "-------------------------------------<BR>\n" );
document.write( "= (1/2)(sqrt(2)/2) + (1/2)sqrt(3)/2<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "= (sqrt(2) + sqrt(3))/4<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "stan H.<BR>\n" );
document.write( "------------------ </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );