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Sorry, 30 years since college and I wasn't awake all the time.

I'm trying to translate the symbology in the attached pics.

Some of the super/subscripts are throwing me off in formulae 13, 14 and 15.

Y and X = planar coordinates of points.

n = number of points.

σβ = standard error of angle observation.

σs = standard error of distance observation.

Σ = the sum in parenthesis.

Si = sum of distances.

The parenthesis are the problems.

Would Xn equal the last coordinate and Xi-1 each proceeding coordinate, so that I should sum the final minus each proceeding X?

The same formulae in 3-91.

I'm trying to translate the symbology in the attached pics.

Some of the super/subscripts are throwing me off in formulae 13, 14 and 15.

Y and X = planar coordinates of points.

n = number of points.

σβ = standard error of angle observation.

σs = standard error of distance observation.

Σ = the sum in parenthesis.

Si = sum of distances.

The parenthesis are the problems.

Would Xn equal the last coordinate and Xi-1 each proceeding coordinate, so that I should sum the final minus each proceeding X?

The same formulae in 3-91.

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