document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=883444>Question 883444</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find an acute angle &#952; that satisfies the equation sin &#952;= cos(2 &#952;+ 30°)\r<BR>\n" );
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document.write( "I don't know which trigonometric identity to use to solve the problem, help and an explanation would be greatly appreciated.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #533527 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=533527\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find an acute angle &#952; that satisfies the equation sin &#952;= cos(2 &#952;+ 30°)<BR>\n" );
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document.write( "sin(t) = cos(2t + 30deg)<BR>\n" );
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document.write( "cos(90-t) = cos(2t+30deg)<BR>\n" );
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document.write( "90-t = 2t+30<BR>\n" );
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document.write( "3t = 60<BR>\n" );
document.write( "t = 20 degrees<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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