Calculation the coordinate of a point

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Maria
Maria 2014-3-17
回答： Walter Roberson 2014-3-18
If the distance and angle (with global x axis) between two points is known and the coordinate of one of two points is also known (as (x,y)) , how could we calculate the coordinate of second point ? .
for example point A = (9,7), the distance between Point A and Point B is √61 (61^1/2), the angle between two points with X axis 20 degree, what is the coordinate of point B ?
  2 个评论
Sara
Sara 2014-3-17
There are infinite points at a given distance from A and they lie on a circle centered in A.
Maria
Maria 2014-3-17
Many thanks to you Sara , but the angle between two points with X axis is also known .

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回答（1 个）

Walter Roberson
Walter Roberson 2014-3-18
pol2cart(distance, angle) + known_coordinates

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