document.write( "Question 1206616: I'm having trouble figuring this out.
\n" ); document.write( "The angles of elevation to an airplane from two points A and B on level ground are 55° and 72°, respectively. The points A and B are 2.8 miles apart, and the airplane is east of both points in the same vertical plane.\r
\n" ); document.write( "\n" ); document.write( "a) Find the distance between the plane and point B. (Round your answer to two decimal places.)
\n" ); document.write( "(b) Find the altitude of the plane. (Round your answer to two decimal places.)
\n" ); document.write( "(c) Find the distance the plane must travel before it is directly above point A. (Round your answer to two decimal places.) \n" ); document.write( "
Algebra.Com's Answer #844177 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\"system%28tan%2853%5Eo%29=h%2F%282.8%2Bx%29%2C+tan%2872%5Eo%29=h%2Fx%29\"\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\"system%28%282.8%2Bx%29tan%2853%5Eo%29=h%2C+x%2Atan%2872%5Eo%29=h%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"%282.8%2Bx%29tan%2853%5Eo%29=+x%2Atan%2872%5Eo%29%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"2.8tan%2853%5Eo%29%2Bx%2Atan%2853%5Eo%29=+x%2Atan%2872%5Eo%29%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"2.8tan%2853%5Eo%29=x%2Atan%2872%5Eo%29-x%2Atan%2853%5Eo%29%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"2.8tan%2853%5Eo%29=x%28tan%2872%5Eo%29-tan%2853%5Eo%29%5E%22%22%29%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"%282.8tan%2853%5Eo%29%29%2F%28tan%2872%5Eo%29-tan%2853%5Eo%29%29=x%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"2.122497045=x%29\"\r\n" );
document.write( "\r\n" );
document.write( "Substitute in\r\n" );
document.write( "\r\n" );
document.write( "\"x%2Atan%2872%5Eo%29=h\"\r\n" );
document.write( "\r\n" );
document.write( "\"2.122497045%2Atan%2872%5Eo%29=h\"\r\n" );
document.write( "\r\n" );
document.write( "\"6.532374213=h\"  <--altitude of plane [answer to (b)]\r\n" );
document.write( "\r\n" );
document.write( "\"x%2F%28PB%29=cos%2872%5Eo%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"x=PB%2Acos%2872%5Eo%29\"\r\n" );
document.write( "\r\n" );
document.write( "\"x%2Fcos%2872%5Eo%29=PB\"\r\n" );
document.write( "\r\n" );
document.write( "\"2.122497045%2Fcos%2872%5Eo%29=PB\"\r\n" );
document.write( "\r\n" );
document.write( "\"6.86854472=PB\" <--distance between the plane and point B [answer to (a)]\r\n" );
document.write( "\r\n" );
document.write( "Find (c) all by yourself, and round off as you were told.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );