Engineering Board Exam Reviewer · Solutions to Oblique Triangles · hard
In triangle ABC, A=40°, a=9 and b=12. Find the smaller possible value of side c.
- 13.83
- 9.19
- 4.56
- 7.71
Answer
C. 4.56
Solution
c2-2bc A+b2-a2=0 c=b A (a2-b2 2A)=9.19 4.64. The smaller value is 4.56 and the larger is 13.83.
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