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If the moon’s diameter is approximately 3500 km, what angle will this diameter subtend if the moon is observed when it is at a distance of about 400,000 km from earth?
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If the moon’s diameter is approximately 3500 km, what angle will this diameter subtend if the moon is observed when it is at a distance of about 400,000 km from earth?

User Paul Molodowitch
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1 Answer

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Using the formula:
S = r∅, where S will be the diameter of the moon, be the distance from the earth and ∅ be the subtended angle in radians.
∅ = 3500/400,000
∅ = 8.75 x 10⁻³ radians
User Sobhan Jahanmard
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