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Two walkers set off at the same time from a crossroad and walk along flat straight roads inclined to each other at 68 degrees.If they both walk at a speed of 6km/h,find their distance apart 10 minutes later.

• maths -

In 10 minutes they each walk 6/6 = 1km

d^2 = 1^2 + 1^2 - 2(1)(1)cos68°

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