Two buildings A and B are as shown in the diagram. A woman walks out of building B to get some sunshine. How much minimum distance in metres will she have to walk in the right direction of building B , according to the situations given below? Assume the right direction of buildings as positive and ground as X − axis .
a) The first sunray not blocked by B has a slope of -2.
(refer attachment 2)
b) The first sunray not blocked by A is also the first sunray not blocked by B. (refer attachment 1)
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