A robot, which is initially facing North, is programmed to travel 5m then turn through , travel 5m then turn through , travel 5m then turn through , and so on. Each move consists of moving 5m in a straight line and then turning clockwise through an angle which increases by at each move.
How far has it travelled by the time it is first facing due East at the end of a move?
Select one option, then click Submit.
9\text{ m}
40\text{ m}
45\text{ m}
50\text{ m}
90\text{ m}
Select an option, then submit.
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Junior Mathematical Challenge 2004 (2004)
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