Questions Phases and Eclipses Problem 9 15. 16. 17. 18. 19. - O O Use the small-angle formula to calculate the angular diameter of Earth as seen from the Moon. (Note: The linear diameter of Earth is 12,700 km; the average distance between the Moon and Earth is 384,000 km; the small-angle formula is angular diameter (in arc seconds) 2.06 x 105 a. About 0.9° or 3400 arc seconds. b. About 3.8° or 13,700 arc seconds. Oc. About 0.5° or 1700 arc seconds. d. About 1.9 or 6800 arc seconds. 0 Icon Key linear diameter distance

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