You found a treasure map, and it's said: Starting at well walk 30m north, 20m 30°N of East, 15m 18°south west, and finally 10m north. How far is the treasure map from the well?
"x=20\\cdot\\cos30\u00b0-15\\cdot\\cos18\u00b0=3.055\\ (m)"
"y=30+20\\cdot\\sin30\u00ad\u00b0-15\\cdot\\sin18\u00b0+10=45.365\\ (m)"
"L=\\sqrt{3.055^2+45.365^2}\\approx45.5\\ (m)" . Answer
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