document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=756834>Question 756834</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please explain this equation to me? and i also believe that the answer would be b. <BR>\n" );
document.write( "a=sin^-1 -x then a=<BR>\n" );
document.write( " <BR>\n" );
document.write( "a. cos^-1 1/sqrt 1-x^2<BR>\n" );
document.write( "b. tan^-1 -x/sqrt 1-x^2<BR>\n" );
document.write( "c. pi/2-cos 1/-x<BR>\n" );
document.write( "d. tan^-1 sqrt 1+x^2/-x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #460607 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=460607\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a=sin^-1 -x then a=\r<BR>\n" );
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document.write( "a. cos^-1 1/sqrt 1-x^2<BR>\n" );
document.write( "b. tan^-1 -x/sqrt 1-x^2<BR>\n" );
document.write( "c. pi/2-cos 1/-x<BR>\n" );
document.write( "d. tan^-1 sqrt 1+x^2/-x<BR>\n" );
document.write( "..<BR>\n" );
document.write( "a=sin^-1 -x<BR>\n" );
document.write( "This expression reads:<BR>\n" );
document.write( "an angle (a) whose sin=-x<BR>\n" );
document.write( "In other words,<BR>\n" );
document.write( "sin(a)=-x<BR>\n" );
document.write( "cos(a)=sqrt(1-sin^2(a)=sqrt(1-x^2)<BR>\n" );
document.write( "tan(a)=sin(a)/cos(a)=-x/sqrt(1-x^2)<BR>\n" );
document.write( "this reads:<BR>\n" );
document.write( "angle(a) whose tangent=-x/sqrt(1-x^2) (ans b.)<BR>\n" );
document.write( "Remember: the inverse is always an angle<BR>\n" );
document.write( " </SPAN>\n" );
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