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    My brain is literally going into melt down, now I worked out every question up until part (c) which is where my headache started, i looked at the mark scheme and from what i can tell they've worked out the triangle OPQ and the area bound by the other polar equation with the limits 11pi/6 and 7pi/6 but i still have no idea how they've found the shaded region.

    Can someone please help me cause its really annoying

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Updated: May 9, 2015

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