Two sensors are spaced $\"\"$ apart along the approach to the airport.

Consider the height of the aircraft from the ground as $\"\"$ .

Angle of elevation from the first sensor is $\"\"$ .

Angle of elevation from the second sensor is $\"\"$ .

Draw a diagram for the situation:

$\"\"$

Observe the figure:

From $\"\"$ triangle:

$\"\"$

Use the Law of Sines:

$\"\"$

$\"\"$ .

From $\"\"$ triangle :

$\"\"$

Substitute $\"\"$ .

$\"\"$

Therefore, height of the aircraft from the ground is $\"\"$ .

Height of the aircraft from the ground is $\"\"$ .