Direction & Distance

Compass directions, turn logic, and Pythagoras-based shortest-distance calculation.

📖 ~4 min read 🧠 RRB NTPC / Group D — Reasoning

Turn	Effect
Right turn (clockwise)	North→East→South→West→North
Left turn (anti-clockwise)	North→West→South→East→North

When movement forms a right angle, shortest distance back to start = √(a² + b²) (Pythagoras theorem)

💡 Example: Walk 8 km North, then turn right and walk 6 km. Distance from start = √(8²+6²) = √100 = 10 km

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