document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=359833>Question 359833</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of cos 75°\r<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 #256766 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=256766\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hint: Use the identity <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2By%29=cos%28x%29cos%28y%29-sin%28x%29sin%28y%29 ALIGN=MIDDLE  ALT=\"cos%28x%2By%29=cos%28x%29cos%28y%29-sin%28x%29sin%28y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Then let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=45 ALIGN=MIDDLE  ALT=\"x=45\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=30 ALIGN=MIDDLE  ALT=\"y=30\"   DISABLED_style= \"max-width:90%; height:auto;\" > and evaluate each trig function on the right side. </SPAN>\n" );
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