Question

Answer

Let D km denote the diameter of the sun. Since the angle subtended by the sun is very small, therefore, its diameter is approximately equal to small arc of a circle with centre at the eye of the observer on the earth.

∴ *l = D*, r = 149,700,000 km

Since

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Note:

1. The angle traced by hour hand in 1 hour is equal to .

2. The angle traced by minute hand in 1 minute is equal to