document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=568645>Question 568645</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the cosine of an angle in a right triangle is 4/7. what is the sine of this angle? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #367058 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=367058\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Cosine = adjacent side of triangle divied by hypotenuse.\r<BR>\n" );
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document.write( "We use the Pythagorean Theorem from geometry to find the opposite side of the triangle.\r<BR>\n" );
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document.write( "x^2 + 4^2 = 7^2\r<BR>\n" );
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document.write( "x^2 + 16 = 49\r<BR>\n" );
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document.write( "x^2 = 49 - 16\r<BR>\n" );
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document.write( "x^2 = 33\r<BR>\n" );
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document.write( "sqrt{x^2} = sqrt{33}\r<BR>\n" );
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document.write( "x = sqrt{33}, which means square root 33.\r<BR>\n" );
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document.write( "Sine = opposite side of triangle divided by hypotenuse.\r<BR>\n" );
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document.write( "sine = sqrt{33}/7\r<BR>\n" );
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document.write( "Did you follow? </SPAN>\n" );
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