Solution: Find the value of “b” in degrees of a spherical triangle ABC

A spherical triangle ABC as an angle C = 90º and sides a = 50º and c = 80º. Find the value of “b” in degrees.

Find the value of “b” in degrees of a spherical triangle ABC

Problem Statement: CE Board April 1997

A spherical triangle ABC as an angle C = 90º and sides a = 50º and c = 80º. Find the value of “b” in degrees.
  • A. 73.22
  • B. 74.33°
  • C. 75.44
  • D.76.55

Problem Answer:

The value of “b” in degrees of a spherical triangle ABC is 74.33°.

Solution:

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