At exactly the same time, Tom and Alice measured the angle of elevation to the moon while

Question:

At exactly the same time, Tom and Alice measured the angle of elevation to the moon while standing exactly 300 km apart. The angle of elevation to the moon for Tom was 49.8974° and the angle of elevation to the moon for Alice was 49.9312°. See the figure. To the nearest 1000 km, how far was the moon from Earth when the measurement was obtained?

Moon 49.8974 49.9312° Tom 300 km Alice