document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=115270>Question 115270</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in triangle ABC given that angle B=45 degrees, angle C=30 degrees, side a=10, find angle A and sides b and c?\r<BR>\n" );
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document.write( "can anyone show me step by step instruction thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #83868 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=83868\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> in triangle ABC given that angle B=45 degrees, angle C=30 degrees, side a=10, find angle A and sides b and c? <BR>\n" );
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document.write( "angle A = 180 -(45+30) = 105<BR>\n" );
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document.write( "Use Law of Sines to get:<BR>\n" );
document.write( "b/sin(B) = a/sin(105)<BR>\n" );
document.write( "b/sin(45) = 10/sin(105)<BR>\n" );
document.write( "b = 10*sin(45)/sin(105)<BR>\n" );
document.write( "b = 7.32...<BR>\n" );
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document.write( "c/sin(C) = a/sin(105)<BR>\n" );
document.write( "c/sin(30) = 10/sin(105)<BR>\n" );
document.write( "c = 10sin(30)/sin(105<BR>\n" );
document.write( "c= 5.176...<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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