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Calculate the sector of a circle when substend an angle of 120 at the center of a circle with radius 7cm
From the question, the three given sides forms a triangle say ABC. By using The Cosine Rule, the angle opposite AB can be found. This angle is 82.8 (to 3 sig. fig.). Therefore,the bearing of A's route from C is 150 - 82.8 = 67.2 degrees.
