In this article (and video above), we solve the value of an interior angle that forms part of the Civil and Environmental Engineering section of the FE Exam to give you a better understanding of what you can expect during the exam.
The interior angles of triangular traverse were measured as: angle A 63 +- .01 degrees. angle B 41 +- .03 degrees, and angle C 77 +- .03 degrees. The most probable value for angle B is:
The sum of angles A, B, and C is 181 degrees; therefore, -1 degree must be divided among the three angles. The corrections are proportional to the square of the probable errors: (.01)2 + (.03)2 + (.02)2 = 0.0014 degrees.
The most probable value for angle B is 77 + (.03 squared) (-1)/0.0014. The correct answer is D.
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I hope you found this week’s FE Environmental engineering exam prep question helpful. In upcoming articles, I will answer more FE Exam questions and run through more practice problems. We publish videos bi-weekly on our Pass the FE Exam YouTube Channel. Be sure to visit our page here and click the subscribe button as you’ll get expert tips and tricks – to ensure your best success – that you can’t get anywhere else. Believe me, you won’t want to miss a single video.
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I’ll see you next week.
Anthony Fasano, P.E.
Engineering Management Institute
Author of Engineer Your Own Success