Question: A plane was heading in a direction 58 east of directly north. It then turned and began to head in a direction 18 south of

A plane was heading in a direction 58° east of directly north. It then turned and began to head in a direction 18° south of directly east. Find the measure of the obtuse angle formed between the two parts of the trip. See Fig. 2.17.

Figure 2.17

58 18

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