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West ; add them together. 3. If both are North or South, but one East and the other West; subtract their sum from 180 degrees. 4. If both are North or South, and both East or West ; add together 90 degrees...
A System of Geometry and Trigonometry: With a Treatise on Surveying ... in ... - Page 52
by Abel Flint - 1830 - 284 pages

## A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - Geometry - 1804 - 168 pages
...and their contained Angle being given the Area may be found by PHOB. IX. Rule 4. Another Method of protracting Fields. Without drawing parallel Lines...1. If the Course or Bearing of one of the Sides is Northerly and the other Southerly, one Easterly and the other Westerly, subtract the less Course from...

## A System of Geometry and Trigonometry: Together with a Treatise on Surveying ...

Abel Flint - Geometry - 1808 - 168 pages
...and their contained Angle being given the Area may be found by PROB. IX. Rule 4. Another Metliod of protracting Fields. Without drawing parallel Lines...1. If the Course or Bearing of one of the Sides is Northerly and the other Southerly, one East* erly and the other Westerly subtract the less Course from...

## A Practical Application of the Principles of Geometry to the Mensuration of ...

Jeremiah Day - Measurement - 1815 - 96 pages
...any two contiguous sides make with each other, may be known by the following rules. 1. If one course is North and the other South, one East and the other West ; subtract the less from the greater. 2. If one is North and the other South, but both East or West; add them together....

## The Second [-fifth and Sixth] Part of A Course of Mathematics: Adapted to ...

Jeremiah Day - Geometry - 1824
...two contiguous sides make with each other, may be known by the following rules. 1. If one course ii North and the other South, one East and the other West ; subtract the less from the greater. 2. If one is North and the other South, but both East or West ; add them together....

## The Principles of Plane Trigonometry, Mensuration, Navigation and Surveying

Jeremiah Day - Measurement - 1831 - 370 pages
...any two contiguous sides make with each other, may be known by the following rules. 1. If one course is North and the other South, one East and the other West ; subtract the less from the greater. 2. If one is North and the oiher South, but both East or West j add them together....

## A Treatise of Plane Trigonometry: To which is Prefixed a Summary View of the ...

Jeremiah Day - Logarithms - 1831 - 155 pages
...any two contiguous sides make with each other, may be known by the following rules. 1. If one course is North and the other South, one East and the other West ; subtract the less from the greater. 2. If one is North and the other South, but both East or West ; add them together....

## A System of Geometry and Trigonometry: With a Treatise on Surveying; in ...

Abel Flint - Geometry - 1835 - 334 pages
...and their contained angle being given, the area may b* found by PROS. IX. Rule 4. ANOTHER METHOD OF PROTRACTING FIELDS. Without drawing parallel lines at the end of each side, a field miry be protracted by the angles made by the several sides ; and the angle made between any two sides...

## The Principles of Plane Trigonometry, Mensuration, Navigation and Surveying ...

Jeremiah Day - Measurement - 1836
...any two contiguous sides make with each other, may be known by the following rules. 1. If one course is North and the other South, one East and the other West ; tubtract the less from the greater. 2. If one is North and the other South, but both East or West;...