trigonometrical's Usage Examples:

A triangulation station, also known as a trigonometrical point, and sometimes informally as a trig, is a fixed surveying station, used in geodetic surveying.

oscillation of the obliquity of the ecliptic, also presents the spherical trigonometrical formulae, gives a longitude of the solar apogee of 85° 49′ and further.

Dangarsleigh is a rural locality and minor trigonometrical station about 11 km south east of Armidale, New South Wales.

He was engaged for several years in the trigonometrical branch and subsequently compiled information on the physical aspects.

Maclear (1794-1879), a famous astronomer who laid the foundation for a trigonometrical survey of the Cape Colony.

Botanical Reserve, a section of Nelson's town belt that includes the trigonometrical geographic centre of New Zealand, Botanical Hill.

Surveyor Charles Scrivener gave the name 'Russell' to an adjacent trigonometrical station in about 1910 and later adopted the name for an early settlement.

appointed to the Department of Lands and Surveys as naturalist to the trigonometrical survey expedition to the Kimberley region and in the following year.