← Back to Training
MCQAdvancedCelestial Coordinates & Time
USAAAO — 2021 First Round
Question 21
Consider a horizontal sundial where the triangular gnomon rises at an angle equal to the sundial site's latitude, φ = 38°. If the area of the triangular gnomon is 2 m2, what would be the area of the shadow in m2 three hours after the noon in the first day of spring (vernal equinox)?
Sign in to save your progress.
Source
USAAAO 2021 First Round. Question text, choices, and answer were transcribed from the official USAAAO exam and solutions PDFs.