This isnt so much an astronomy question as one would think(adsbygoogle = window.adsbygoogle || []).push({});

A perfectly black satellite is in orbit around the earth at a height of 2000 km

What solid angle does the earth subtend when viewed from teh satellite?

[tex] \cos \theta = \frac{6370km}{8370km} [/tex]

WEll if we look at hte diagram the angle theta is 40.4 degrees or 0.705 radians

we want the solid angle which is defined as

[tex] \Omega = \int_{0}^{2 \pi} \int_{0}^{0.705} \sin \theta' d \theta' d \phi [/tex]

is this fine?

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# Homework Help: Solid Angle

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