Home › Previous year questions › GATE 2025 MN › Question 41GATE 2025 MN – Question 41 Mining Geology, Mine Development and Surveying · Mine Surveying · 2 marks · Multiple choice
A closed traverse PQRS has fore bearings PQ60°30′,QR105°30′,RS220°30′,SP310°30′. Find interior angles at P and R respectively.
45°,115° 70°,65° 135°,90° 250°,115° Practise this question in The GATE Grind →
Show answer and explanation Correct answer: (B) 70°,65°
Explanation At P the incoming SP reversed gives PS130°30′. Its smaller angle with PQ60°30′ is70°. At R, RQ is QR+180°=285°30′, differing from RS220°30′ by65°. Thus B. Reverse the incoming direction before comparing bearings at a vertex.
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