Engineering Board Exam Reviewer · Spherical Trigonometry · medium
In a right spherical triangle with C=90°, the hypotenuse c=70° and angle A=40°. Find the side a opposite angle A, in degrees.
- 45°
- 52.85°
- 37.16°
- 25.54°
Answer
C. 37.16°
Solution
By Napier's rules, a= c A= 70° 40°=0.6040, so a=37.15°.
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