Hello, dalbir4444!

The CN Tower is 553 m tall.

A person is south of the tower at a position that makes

an angle of elevation of 10° to the top of the tower.

A second person is on a bearing of 060 degrees relative to the tower,

observing the top of the tower at an angle of elevation of 9°.

Determine the displacement between the two people.

Looking down at the ground, we have this diagram: Code:

N o B
: */
:60°* /
: *y /
T o /
| /
x | /
|/
A o

The tower is at T.

The first observer is at A; the second is at B.

Let

Law of Cosines: . .[1]

The observer at A has this right triangle: Code:

*
* |
* | 553
* 10° |
* - - - - - *
x

We have: . .[2]

The observer at B has this right triangle: Code:

*
| *
553 | *
| 9° *
* - - - - - *
y

We have: . .[3]

Substitute [2] and [3] into [1]:

. .

*Go for it!*