Spherical Trig(Terrestrial triangle: course & distance)

Stein

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Joined
Sep 13, 2014
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I already know the formulas to be used such as:
1.) cos a = [(cos b)(cos c)]+[(sin b)(sin c)(cos A)]
2.) Sin a/Sin A = Sin b/Sin B = Sin c/Sin C
3.)
Note: small letters represents sides; capital letters represents angles.
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Find the initial course and great-circle distance:
From California, Latitude 38 degrees North, Longitude 122 deg West, to Hawaii, Latitude 21 deg North, Longitude 158 deg West.
Answer: 292 degrees and 5160 mi
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Please help me!!! I can't simply solve it... I'm confused and desperate. Any help would much be appreciated. Thanks :)
 
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