Engineering Board Exam Reviewer · Solutions to Oblique Triangles · easy
The sides of a triangle are 7, 8 and 9. Find its smallest angle, in degrees.
- 48.19°
- 58.41°
- 73.4°
- 41.81°
Answer
A. 48.19°
Solution
The smallest angle is opposite the shortest side: A=82+92-72/2(8)(9)=96/144= 23, so A=48.19°.
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