# Mathematician:Edmund Gunter

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## Mathematician

British clergyman, mathematician, geometer and astronomer.

Best remembered for his contributions toward land surveying: Gunter's chain, the Gunter's quadrant and the Gunter's scale.

Credited with the first ever publication, in $1620$, of logarithms of trigonometric functions.

Invented the terms cosine and cotangent.

## Nationality

English, of Welsh descent

## History

- Born: 1581 in Hertfordshire, England
- Died: 10 December 1626 in London, England

## Inventions

## Publications

- 1603:
*New Projection of the Sphere* - 1620:
*Canon Triangulorum sive Tabulae Sinuum et Tangentium Artificialum*("Canon of Triangles: or Tables of Artificial Sines and Tangents") - 1623:
*Description and Use of the Sector, the Crosse-staffe and other Instruments* - 1624:
*The Description and Use of His Majesties Dials in Whitehall Garden*