Q18 of 28 Page 4

Find the diameter of the Sun in km supposing that it subtends an angle of 32’ at the eye of an observer. Given that the distance of the Sun is 91 x 106 km.

Let PQ be the diameter of the sun and E be the eye of the observer.


The distance between the Sun and Earth is large, so we will take PQ as arc PQ.


Given radius = 91 × 106 km



We know that




= 847407.4 km


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