To find the distance from a house at point A that is on one side of a river to a

To find the distance from a house at point A that is on one side of a river to a house at point B on the

other side of a river, a surveyor walks off a distance of 100 feet to point C on the same side of the river
as point A. He then determined that the angle at point A is 40˚ and at point C is 50˚. Determine the
distance between point A and B.

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