document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=30138>Question 30138</A>: <I><SPAN STYLE=\"word-break: break-all;\"> for sinA +cosAcotA=cscA<BR>\n" );
document.write( " a.Show that the equation is true whenA=30 degrees. use exact values<BR>\n" );
document.write( " b.prove the equation algebraically<BR>\n" );
document.write( " c.state any restrictions to the equation </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #16851 by </B><A HREF=/tutors/aboutme.mpl?userid=Paul><B>Paul(988)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Paul><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=16851\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For part a; to do this first switch your calculator into radians mode and then calculate:<BR>\n" );
document.write( "sin(30)+cos(30)(cos[30]/sin[30])=1/sin(30)<BR>\n" );
document.write( "-0.988+(0.154)(-0.156)=1.01<BR>\n" );
document.write( "1.01=1.01\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "For part b put the equation into simplier steps:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SinA%2BCosA%28CosA%2FSinA%29=1%2FSinA ALIGN=MIDDLE  ALT=\"SinA%2BCosA%28CosA%2FSinA%29=1%2FSinA\"   DISABLED_style= \"max-width:90%; height:auto;\" > --> deal with the left side:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=SinA%2B%28Cos%5E2%28A%29%29%2FSinA ALIGN=MIDDLE  ALT=\"SinA%2B%28Cos%5E2%28A%29%29%2FSinA\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply the SinA by SinA to get a common denomenator:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28Sin%5E2%28A%29%2Bcos%5E2%28A%29%29%2FSinA ALIGN=MIDDLE  ALT=\"%28Sin%5E2%28A%29%2Bcos%5E2%28A%29%29%2FSinA\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use Pathagorean identity:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2FSinA ALIGN=MIDDLE  ALT=\"1%2FSinA\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "L.S. = R.S and Hence, proven:<BR>\n" );
document.write( "Paul. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );