The observer is at the north pole of the Earth (φ = + 90o). The position of the vernal equinox point y is known (figure)

The observer is at the north pole of the Earth (φ = + 90o). The position of the vernal equinox point y is known (figure); the star has right ascension a = 120о, and declination b = + 60о. Find the height and azimuth of the star.

Height h = NKM = 40o.
Azimuth A = NEK = 85o.

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