Posted by Trig on Thursday, September 10, 2009 at 5:29pm.
Two observers 1 km apart spot an airplane. The angles of elevation of the airplane from the two observers are 22 degrees 50 minutes and 24 degrees 40 minutes. If the observers and the airplane are in the some vertical plnae, compute the altitude of the airplane.
ok i don\'t know how to do this if you could show me how to do this
Also I think i may be reading this wrong i don\'t know
they put 22 then raise it to a circle which is used for degrees but than after that they do something like 50\' which i believe are minutes
a2 = unkown horizontal distance from observer to verticle component that the line of sight makes at the air plane
a2 tan 24.7 = opposite
(1 km + a2) tan 22.8 = x
a2 tan 24.7 = (1 km + a2) tan 22.8
not sure how to solve for a2

Trig  Reiny, Thursday, September 10, 2009 at 6:05pm
let's make a diagram.
(I think your's is probably close)
draw a straight line and mark two points A and B and label AB = 1 km
Place the plane above the line AB and to the right of it, call it P
Extend AB, and from P draw a perpendicular down to the extended line AB and let Q be the point where it meets AB extended.
You should now have two rightangled triangles, APQ and BPQ, with the right angle at Q.
Label BQ as x, and PQ as y
now in the inside triangle,
tan 24.7ยบ = y/x
y = xtan24.7
in the larger triangle,
tan 22.8 = y/(x+1)
y = (x+1)tan22.8
so (x+1)tan22.8 = xtan24.7
expanding
xtan22.8 + tan22.8 = xtan24.7
tan22.8 = xtan24.7  xtan22.8
tan22.8 = x(tan24.7  tan22.8)
x = tan22.8/(tan24.7tan22.8)
now use your calculator to find x (I don't mine handy)
once you have x, sub it back into
y = xtan24.7 to find the height y

Trig  cloyd pepito, Sunday, September 20, 2015 at 6:13am
0.2
Answer This Question
Related Questions
 Trigonometry  An airplane is sighted at the same time by two ground observers ...
 trigonometry  An aircraft at C is spotted by two observers at A and B who are L...
 Trigonometry  Two observers who are 2 miles apart on a horizontal plane observe...
 Art  An artist places a notebook and pen in the gallery of his latest ...
 Art (1 question)  An artist places a notebook and pen in the gallery of his ...
 math  Each of two observers 475 feet apart measures the angle of elevation to ...
 Art plz correct me!!!  an artist places a notebook and pen in the gallery of ...
 math help pls  Two observers who are 5 km apart simultaneously sight a small ...
 math  Two observers who are 5 km apart simultaneously sight a small airplane ...
 Math  An airplane is at an altitude of 10 km. You spot the airplane at an angle...
More Related Questions