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A shop owner wants to prevent shoplifting. He decides to install a security camera on the ceiling of his shop.

A shop owner wants to prevent shoplifting. He decides to install a security camera on the ceiling of his shop. He places the camera in the corner of the shop (at point P) The camera can turn through 360° The diagram shows a plan view of the shop with ten people standing in it.

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A shop owner wants to prevent shoplifting. He decides to install a security camera on the ceiling of his shop.

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  1. A shop owner wants to prevent shoplifting. He decides to install a security camera on the ceiling of his shop. He places the camera in the corner of the shop (at point P) The camera can turn through 360° The diagram shows a plan view of the shop with ten people standing in it

  2. Which people can the camera NOT see? • The shopkeeper thinks that 15% of the shop is hidden from the camera. Is he right or not? Explain. • (a) What do you think is the best place for the camera, so that it can see as much of the shop as possible. • (b) How you know that this is the best place for the camera?

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