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Q1: The bearing of lines OA and OB are 16° 10' and 332° 18', the value of the included angle BOA is

A 316° 10'

B 158° 28'

C 348° 08'

D 43° 52'

ANS:D - 43° 52'

Bearing of the previous line - bearing of next line.
= 332-16.10= 316.08 exterior angle.
Interior angle = 360-316.08= 43.92. Included angle = F.B of next line - B.B of the previous line,
332°18'-(180°+16°10')= 136°8'. 332.18 - 16.10 = 316.08.
360 - 316.08 = 43.52.
Option D is the correct Answer.



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