document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=282047>Question 282047</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In triangle ABC, angle C is a right angle. If sin A = 6/10, find cos A.<BR>\n" );
document.write( "a. 3/5<BR>\n" );
document.write( "b. 3/4<BR>\n" );
document.write( "c. 8/10<BR>\n" );
document.write( "d. 10/8 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #204840 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathematicians><B>Mathematicians(84)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathematicians><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/cgi-bin/show-face.mpl?user=Mathematicians><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=204840\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We know that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X%5E2+%2B+Y%5E2+=+Z%5E2 ALIGN=MIDDLE  ALT=\"X%5E2+%2B+Y%5E2+=+Z%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > where Z is the hypotenuse and X and Y are two sides of a right triangle.\r<BR>\n" );
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document.write( "For sine = Y/Z = 6/10\r<BR>\n" );
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document.write( "so we know <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X%5E2+%2B+6%5E2+=+10%5E2 ALIGN=MIDDLE  ALT=\"X%5E2+%2B+6%5E2+=+10%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "which is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X%5E2+%2B+36+=+100 ALIGN=MIDDLE  ALT=\"X%5E2+%2B+36+=+100\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "which is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X%5E2+=+64 ALIGN=MIDDLE  ALT=\"X%5E2+=+64\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "which is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X+=+8 ALIGN=MIDDLE  ALT=\"X+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" > since we are dealing with distance, we take the positive value for X.\r<BR>\n" );
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document.write( "We know cosine is X/Z, Z stays the same and X is 8. So your answer is 8/10 or 4/5 </SPAN>\n" );
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