It is true. The triangles are congruent.
Answer:
Rotation 180° counterclockwise about the origin
X = half width of tent
Tan(40) = 6/x
x = 6/Tan(40) = 7.15
2x = 14.30 feet the width of the tent
597008.439431 rounded to the nearest thousandth is 597008.439, because a thousandth place is 3 decimal places available, to the right.