If my latitiude is 40 degrees south and the sun is at 15 degrees north declination, it will rise in the ____ (direction), transit _____ degrees _____ of the zenith, and set in the ______ (direction).

1 Answer | Add Yours

growley52's profile pic

growley52 | College Teacher | (Level 1) Adjunct Educator

Posted on

Use the sunrise equation to find the direction of sunrise:  
cos(dir. of sunrise) = -tan(latitude of observer)xtan(declination of sun)

I come up with 77 degrees, or NNE, roughly.

Using the positive value, instead of the negative, I get 103 degrees for the direction of sunset.

In terms of the horizon, this transit measures 26 degrees, south of zenith.

We’ve answered 319,622 questions. We can answer yours, too.

Ask a question