Answer to Question #36131 in Mechanics | Relativity for ammy
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since he takes a sharp turn of 60 degrees to left he makes an an angle of 120 degress to the inside,and 60 degrees to the outside.thus it will form a polygon with mease of interior angle 120 and exterior angle 60.thus it is a hexagon.thus 6 side after 6th turn it will complete 2 more turn spanning 2 more side of the hexagon.thus distance covered will be 20.but displace ment is asked,so we form a trianglr with 2 sides measuring 10 m and the angle between them is 120.thus by sin rule of triangle: root3 * side