Tolong di jawab menggunakan caranya ya..

(30°-0°) (t-30°)
-------- = -------
(60°-0°) (150°-30°)

(30°) (t-30°)
---- = -------
(60°) (120°)

(1°) (t-30°)
--- = -----
(2°) (120°)

(2t° - 60°) = 120°
2t= 120°+60°
2t= 180°
t= 90°

Jadi,, jawabannya adl 90°N