#### Problem Statement:

Determine the value of the angle B of an isosceles spherical triangle ABC whose given parts are b = c = 54°28’ and a = 92°30’.

- A. 89°45’
- B. 55°45’
- C. 84°25’
- D. 41°45’

#### Problem Answer:

The value of the angle B of an isosceles spherical triangle ABC is **41°45’**.

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