Engineering Board Exam Reviewer · Solutions to Oblique Triangles · medium
The sides of a parallelogram are 10 and 14, and the angle between them is 65°. Find the length of the longer diagonal.
- 13.33
- 17.2
- 24
- 20.36
Answer
D. 20.36
Solution
The longer diagonal is opposite the obtuse angle: d2=102+142+2(10)(14) 65°=414.33, so d=20.36.
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