The sine of 80 degrees times the hypotenuse 0.96 chains, equals
the opposite side 0.9454, which rounds to 0.95 chains. The position
in departure for the temp stake is computed the same way and equals
1.44 chains.

The true latitudes of the closing error and of the temp stake would
be computed using the cosine ratio.

The cosine of bearing theta times the hypotenuse equals the adjacent
side, or the latitude in chains.