At what distance from Venus is the automatic station located if the angular diameter of the planet is 0.5 °

At what distance from Venus is the automatic station located if the angular diameter of the planet is 0.5 ° (the linear diameter of Venus is 12 100 km)?

Knowing the linear diameter of the Moon (3400 km) and its distance from the Earth (3.8 * 10 ^ 5 km) and taking into account that the angular sizes of the Moon and Venus are equal: r1 / D1 = r2 / D2, we get: D1 = 3.8 * 10 ^ 5 * 12100/3400 = 1.35 * 10 ^ 6 km.

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