Final answer:
Dalila is approximately 1358.81 feet away from the base of the Willis Tower.
Step-by-step explanation:
To calculate the distance Dalila is from the base of the Willis Tower, we can use trigonometry. We need to find the length of the side adjacent to the angle of elevation. Let's call this distance D. We can use the tangent function to find this value. tan(50°) = D/1450 feet. Rearranging the formula, D = 1450 feet * tan(50°). Plugging in the values and calculating, we get D ≈ 1358.81 feet. Therefore, Dalila is approximately 1358.81 feet away from the base of the tower.