document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=993791>Question 993791</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find sin2b if sin b = 7/25 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #613026 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52800)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=613026\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Find sin2b if sin b = 7/25<BR>\n" );
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document.write( "Is my understanding correct that you want to find &nbsp;sin(2b)?\r<BR>\n" );
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document.write( "If so, &nbsp;use the formula &nbsp;&nbsp;sin(2b) = 2*sin(b)*cos(b).\r<BR>\n" );
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document.write( "Do you know this formula?\r<BR>\n" );
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document.write( "To complete calculations, &nbsp;you need to know &nbsp;cos(b)&nbsp; too.\r<BR>\n" );
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document.write( "You can calculate it via &nbsp;sin(b): \r<BR>\n" );
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document.write( "cos(b) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%281+-+sin%5E2%28b%29%29 ALIGN=MIDDLE  ALT=\"sqrt%281+-+sin%5E2%28b%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%281+-+%287%2F25%29%5E2%29 ALIGN=MIDDLE  ALT=\"sqrt%281+-+%287%2F25%29%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%281-%2849%2F625%29%29 ALIGN=MIDDLE  ALT=\"sqrt%281-%2849%2F625%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28%28625-49%29%2F625%29 ALIGN=MIDDLE  ALT=\"sqrt%28%28625-49%29%2F625%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28576%2F625%29 ALIGN=MIDDLE  ALT=\"sqrt%28576%2F625%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=24%2F25 ALIGN=MIDDLE  ALT=\"24%2F25\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Now you are ready to calculate \r<BR>\n" );
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document.write( "sin(2b) = 2*sin(b)*cos(b) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7%2F25 ALIGN=MIDDLE  ALT=\"7%2F25\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=24%2F25 ALIGN=MIDDLE  ALT=\"24%2F25\"   DISABLED_style= \"max-width:90%; height:auto;\" > = . . . \r<BR>\n" );
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document.write( "Please complete this calculation yourself. \r<BR>\n" );
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