document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=868199>Question 868199</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value by using a sum or difference identity.\r<BR>\n" );
document.write( "\n" );
document.write( "sin 75° </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523403 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=523403\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Since 75 = 45 + 30, we can use the following identity:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%2845%2B30%29+=+sin%2845%29%2Acos%2830%29+%2B+cos%2845%29%2Asin%2830%29+=+%281%2Fsqrt%282%29%29%28sqrt%283%29%2F2%29+%2B+%281%2Fsqrt%282%29%29%2A%281%2F2%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This can be simplified to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sqrt%283%29%2B1%29%2Fsqrt%288%29 ALIGN=MIDDLE  ALT=\"%28sqrt%283%29%2B1%29%2Fsqrt%288%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );