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GATE 2021 CE (CE1) – Question 65

Geomatics Engineering · Distance and angle measurement, levelling, traversing, triangulation, total station · 2 marks · Numerical answer

A closed traverse PQRS has internal angles P=92°,Q=68°,R=123°,S=77°. Fore bearing of PQ is 27°. Find fore bearing of RS in degrees (integer).

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Correct answer: 196 to 196 OR 218 to 218

Explanation

For one traverse orientation,bearings advance by180° minus the interior angle:QR=27+180−68=139°,RS=139+180−123=196°. For the reverse turning orientation,QR=27−(180−68)=−85° and RS=−85−(180−123)=−142°=218°. The printed data do not fix the turning orientation,so the official key correctly accepts **196° OR 218°**.