Hello, ahmedb!

The description is rather fuzzy; they should have supplied a diagram.

I hope I've interpreted it correctly/

Qhile standing at the left corner of the schoolyard in front of her school,

Suzie estimates that the fronth face is 8.9m wide and 4.7 high.

From her position, Suzie is 12.0m from the base of the right exterior wall.

She determines that the left and the right exterior walls appear to be 39 degrees apart.

From her position, what is the angle of elevation, to the nearest degree,

. . to the top of the left exterior wall?

Rectangle is the front face of the school.Code:D C o - - - - - - - - - o *| | * |4.7 | * | | * | 8.9 | * o - - - - - - - - - o * * A * B * * * * * 39d * 12.0 ** * S o

. .

Suzie is at point

We want

In , we have: .

Law of Sines: .

Hence: .

Law of sines: .

Hence: .

In right triangle

Therefore: .