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The sun and moon appear in the sky to be about the same size. (You can...

The sun and moon appear in the sky to be about the same size. (You can see this most impressively during a total eclipse of the sun.) The moon is a distance 3.8 × 108 m from earth, and the sun is a distance 1.5 × 1011 m from earth. The radius of the moon is 1.7 × 106 m. (a) Given the above information, how large is the sun? (b) Why do they appear—to the eye—to be the same size? (Hint: “angle subtended.”)

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