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Problem: The Sun subtends an angle of about 0.5 degrees to us on Earth, 150 million km away. Estimate the radius of the Sun?

FREE Expert Solution

Using the formula for central angle for radiation,  S = rθ , where S is the diameter of the sun and r is the distance between the sun and the earth.

Distance, r: r = 150 million km = 1.50 × 10-2 × 106 × 103 m

r = 1.50 × 107 m

S = (0.5° × (π rad)/180°)(1.50 × 107 m) = 1.309 × 10

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Problem Details

The Sun subtends an angle of about 0.5 degrees to us on Earth, 150 million km away. Estimate the radius of the Sun?

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