document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=808932>Question 808932</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the exact value of this expression? arcsin(sin(-3pi/5)) \r<BR>\n" );
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document.write( "How do I get the answer? Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #487325 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=487325\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let<BR>\n" );
document.write( "(1) sin(x) = y<BR>\n" );
document.write( "Then<BR>\n" );
document.write( "(2) x = arcsin(y)<BR>\n" );
document.write( "Put y of (1) into (2) and see that<BR>\n" );
document.write( "(3) x = arcsin(sin(x))<BR>\n" );
document.write( "In your problem<BR>\n" );
document.write( "(4) x = -3pi/5<BR>\n" );
document.write( "So the exact value of <BR>\n" );
document.write( "(5) arcsin(sin(-3pi/5)) = -3pi/5<BR>\n" );
document.write( "When the exact answer is asked for, use the symbol, pi in this case, for the irrational number not a decimal. </SPAN>\n" );
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