document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1138457>Question 1138457</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. Find the largest angle of the triangle whose sides are of length 2cm, 4cm, <BR>\n" );
document.write( "   5cm.<BR>\n" );
document.write( "2. If sin x =3/5 and x is acute,find the value of tan 2x and tan x/2. <BR>\n" );
document.write( "3. Find all the angles 0° and 360° whose sine is +.5.<BR>\n" );
document.write( "4. Find all the angles between 0° and 360° whose tangent is 1.5.<BR>\n" );
document.write( "5. By means of a right-angle isosceles ∆, deduce that<BR>\n" );
document.write( "   Sin 45°=cos45°=1/√2.<BR>\n" );
document.write( "   Prove that cos(45°+A)=1/√2(cosA-sinA) and sin(45°+A)=1/√2(cosA+sinA). <BR>\n" );
document.write( "   Deduce cos A = 1/√2{cos(45°+A)+sin (45° + A)} and the corresponding result <BR>\n" );
document.write( "   for sin A. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #756277 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=756277\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. Find the largest angle of the triangle whose sides are of length 2cm, 4cm, <BR>\n" );
document.write( "5cm.<BR>\n" );
document.write( "The largest angle is opposite the longest side.<BR>\n" );
document.write( "Use the Cosine Law.<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "2. If sin x =3/5 and x is acute,find the value of tan 2x and tan x/2. <BR>\n" );
document.write( "3. Find all the angles 0° and 360° whose sine is +.5.<BR>\n" );
document.write( "you have to know that.<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "4. Find all the angles between 0° and 360° whose tangent is 1.5.<BR>\n" );
document.write( "Use a calculator to find the angle in Q1.<BR>\n" );
document.write( "Then add 180 degs for the angle in Q3.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "5. By means of a right-angle isosceles ∆, deduce that<BR>\n" );
document.write( "Sin 45°=cos45°=1/√2.<BR>\n" );
document.write( "Prove that cos(45°+A)=1/√2(cosA-sinA) and sin(45°+A)=1/√2(cosA+sinA). <BR>\n" );
document.write( "Deduce cos A = 1/√2{cos(45°+A)+sin (45° + A)} and the corresponding result <BR>\n" );
document.write( "for sin A. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );