document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=864436>Question 864436</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if x is in quadrant 4 and cos x = square root of 7/ 3 then what is sin x? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #521002 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=521002\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if x is in quadrant 4 and cos t = square root of 7/ 3 then what is sin t?<BR>\n" );
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document.write( "In QIV, x is positive and y is negative.<BR>\n" );
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document.write( "Since cos = x/r, x = sqrt(7) and r = 3<BR>\n" );
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document.write( "Then y = -sqrt[3^2-(sqrt(7))^2] = -sqrt(2)<BR>\n" );
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document.write( "Ans: sin(t) = y/r = -sqrt(2)/3<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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