Question

1.  The computation of a term in the L vector for a horizontal angle requires
the use of
(a) distance from occupied to foresight
(b) sine
(c) inverse cosine
(d) inverse tangent

2.  Potential units for the standard error of unit weight in differential
leveling (assuming reasonable error estimation) is
(a) feet
(b) meters
(c) unitless
(d) all of the above

3.  A reason to quit iterating is not
(a) insignificant decrease in standard error of unit weight
(b) partial derivatives are insignificant (near zero)
(c) increase in standard error of unit weight
(d) insignificant updates to unknown parameters

Answer 1