document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121165>Question 1121165</A>: <I><SPAN STYLE=\"word-break: break-all;\"> initially a ship and submarine are stationary at sea level 1.78km apart. the submarine then manoeuvres to position A, 45 meters directly below its starting point. in a second manoeuvres the submarine dives a further 62 meters to position B. a find the angle of elevation of the ship from the submarine when the submarine is at position A<BR>\n" );
document.write( "B find the angle of elevation of the ship from the submarine when the submarine is at position B.<BR>\n" );
document.write( "c find the difference in the angles of elevation from the submarine to the ship when the submarine is at position A and B<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #736969 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=736969\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> nitially a ship and submarine are stationary at sea level 1.78km apart.<BR>\n" );
document.write( " the submarine then maneuvers to position A, 45 meters directly below its starting point.<BR>\n" );
document.write( " in a second maneuvers the submarine dives a further 62 meters to position B.<BR>\n" );
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document.write( "Change 1.78 km to 1780 meters<BR>\n" );
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document.write( " a find the angle of elevation of the ship from the submarine when the submarine is at position A<BR>\n" );
document.write( "A triangle is formed by the ship, the surface point of the sub and 45' underwater point. Find the angle (A) at the sub using the tangent<BR>\n" );
document.write( "tan(A) = 1780/45<BR>\n" );
document.write( "A = 88.55 degrees <BR>\n" );
document.write( "Find angle of elevation: 90 - 88.55 = 1.45 degrees to ship<BR>\n" );
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document.write( " b find the angle of elevation of the ship from the submarine when the submarine is at position B<BR>\n" );
document.write( "Total depth at position B: 45 + 62 = 107 ft<BR>\n" );
document.write( "Tan(B) = 1780/107<BR>\n" );
document.write( "B = 86.56 degrees<BR>\n" );
document.write( "Find the angle of elevation: 90 - 86.56 = 3.44 degrees to the ship<BR>\n" );
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document.write( " c find the difference in the angles of elevation from the submarine to the ship when the submarine is at position A and B<BR>\n" );
document.write( "3.44 - 1.45 = 1.99 degree difference<BR>\n" );
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