The signal length from the satellite to the earth station can be found as(adsbygoogle = window.adsbygoogle || []).push({});

2(hs-he)/[{sin^2(theta)+(2(hs-he)/Re)}^1/2+sin(theta)] if theta < 5 degrees Due to the earth projection

where "hs" is satellite height and "he" is the earth station height and Re is the earth radius=3700 Km

My question is Can you help me to derive this equation? how they have obtained it?

Regards

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# Can you explain TRIGONOMETRY equation [HELP]

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