document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=57558>Question 57558</A>: <I><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "13. Find the exact value of sin 30 ° - sin 45 ° cos 45 ° .<BR>\n" );
document.write( "a. 0 <BR>\n" );
document.write( "b. 1/2 <BR>\n" );
document.write( "c. 1 <BR>\n" );
document.write( "d. 2 \r<BR>\n" );
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document.write( "14. Find the value of tan 42 ° to 4 decimal places.<BR>\n" );
document.write( "a. 2.2914 <BR>\n" );
document.write( "b. 0.9004 <BR>\n" );
document.write( "c. 1.1106 <BR>\n" );
document.write( "d. 0.7431 \r<BR>\n" );
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document.write( "15. Find the value of sec 38 ° to 4 decimal places.<BR>\n" );
document.write( "a. 1.6243 <BR>\n" );
document.write( "b. 0.7880 <BR>\n" );
document.write( "c. 0.6157 <BR>\n" );
document.write( "d. 1.2690 \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #39282 by </B><A HREF=/tutors/aboutme.mpl?userid=funmath><B>funmath(2933)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=funmath><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=39282\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "13. Find the exact value of sin 30 ° - sin 45 ° cos 45 ° .<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28a%29 ALIGN=MIDDLE  ALT=\"highlight%28a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. 0 <BR>\n" );
document.write( "b. 1/2 <BR>\n" );
document.write( "c. 1 <BR>\n" );
document.write( "d. 2 <BR>\n" );
document.write( "Here's how:<BR>\n" );
document.write( "sin(30)=1/2, sin(45)=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fsqrt%282%29 ALIGN=MIDDLE  ALT=\"1%2Fsqrt%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, cos(45)=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fsqrt%282%29 ALIGN=MIDDLE  ALT=\"1%2Fsqrt%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, therefore,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2-%281%2Fsqrt%282%29%29%2A%281%2Fsqrt%282%29%29 ALIGN=MIDDLE  ALT=\"1%2F2-%281%2Fsqrt%282%29%29%2A%281%2Fsqrt%282%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F2-1%2F2 ALIGN=MIDDLE  ALT=\"1%2F2-1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0 ALIGN=MIDDLE  ALT=\"0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "14. Find the value of tan 42 ° to 4 decimal places.<BR>\n" );
document.write( "a. 2.2914 <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28b%29 ALIGN=MIDDLE  ALT=\"highlight%28b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. 0.9004  Make sure you calculator is on degree mode. <BR>\n" );
document.write( "c. 1.1106 <BR>\n" );
document.write( "d. 0.7431 \r<BR>\n" );
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document.write( "15. Find the value of sec 38 ° to 4 decimal places.<BR>\n" );
document.write( "a. 1.6243 <BR>\n" );
document.write( "b. 0.7880 <BR>\n" );
document.write( "c. 0.6157 <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28d%29 ALIGN=MIDDLE  ALT=\"highlight%28d%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. 1.2690  <BR>\n" );
document.write( "sec(x)=1/cos(x), so if you have a ti-83 type in (cos(38))<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E%28-1%29 ALIGN=MIDDLE  ALT=\"x%5E%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and it will give you the reciprocal of cos(38) which is sec(38).<BR>\n" );
document.write( "Happy Calculating!!! \r<BR>\n" );
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