length of dct2=d2-(r1-r2)
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The tangent ray refers to either the northernmost or southernmost hemisphere where the vertical rays refers to direct sun. During the June 21 solstice, the latitude rays in the southern hemisphere would be 66.5 deg S (Antarctic Circle)
Tangent to orbit, north away, tangent to orbit, south away.
In order to find the equation of a tangent line you must take the derivative of the original equation and then find the points that it passes through.
2.952755906 in Direct Conversion Formula 75 mm* 1 in 25.4 mm = 2.952755906 in
0.7480314961 in Direct Conversion Formula 19 mm* 1 in 25.4 mm = 0.7480314961 in