Question: For determining the support reactions at A and B of a three hinged arch, points B and C are joined and produced to intersect the load line at D and a line parallel to the load line through A at D '. Distances AD , DD ' and AD ' when measured were 4 cm, 3 cm and 5 cm respectively. The angle between the reactions at A and B is
Options
A : 30°
B : 45°
C : 60°
D : 90°
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