Engineering Board Exam Reviewer · Spherical Trigonometry · easy
The angles of a spherical triangle are 80°, 70° and 60°. Find its spherical excess, in degrees.
- 210°
- 60°
- 40°
- 30°
Answer
D. 30°
Solution
E=A+B+C-180°=80°+70°+60°-180°=30°.
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