What is the angular diameter of the Sun when observed from Mercury, if when observed from the Earth the angular diameter

What is the angular diameter of the Sun when observed from Mercury, if when observed from the Earth the angular diameter of the Sun is 30 ‘ The distance from the Sun to Mercury is 0.4 AU.

decision
p (h) / p (m) = D (m) / D (h); p (m) = p (h) * D (h) / D (m); p (m) = 30 * 1 / 0.4 = 75

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