Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question

16: 

A cyclic quadrilateral ABCD is circumscribing a circle having a center at point O.
Angle AOC is 183˚58'. If AB = 50 m., BC = 90 m. and AD = 70 m. Find the angle
ABC.

 

Select one:
a. 84 deg
b. 72 deg
c. 88 deg
d. 76 deg
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