As Ms. Dorman looked from the window of her third-story classroom, she noticed Pam in the courtyard. Ms. Dorman’s eyes were
Start by drawing a detailed diagram showing Pam, Ms. Dorman, and the building. Label completely. Remember that the angle of depression is the anglebetween Ms. Dorman's line of sight and the horizontal line, not between her line of sight and the building.
Use the tangent ratio to solve for θ. θ is the adjacent angle to angle of depression.