Hello, purplec16!

An airplane flying at an altitude of 10,000 feet passes directly over a fixed object on the ground.

One minute later, the angle of depression of the object is 42°.

Approximate the speed of the airplane to the nearest mile per hour.

Ans: 126 mi/hr

??

Is this right so far? . . . . no Code:

a
* - - - - - *
| 42° *
| *
10,000 | *
| *
| *
*

Your set-up is correct, but . . .

. .

The plane flew: . feet in one minute.

It would fly: . feet in one hour.

It would fly: . miles in one hour.

Therefore, its speed is about 126 mph.