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Given the information on the diagram, determine the coordinates of point 101.

This is a Distance-Distance intersection.

Figure E-1
Example Computation
 

 

 

Step (1) Inverse along the base line from 30 to 20.

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 Step (2) Compute the angle at 30 by Law of Cosines.

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 Step (3) Compute the direction from 30 to 101.

 

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 Step (4) Perfom a forward computation from 30 to 101.

 

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Math check: Compute coordinates from point 20.

Step (1) Compute angle at 20 by Law of Sines.

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 Step (2) Compute direction from 201 to 101.

 

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 Step (3) Perfom a forward computation from 20 to 101.

 

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  From 30  From 20   
North 4574.616 4574.616
East  1085.955  1085.955