טריגונומטריה

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Elements of geometry : containing the first six books of Euclid, with a supplement on the quadrature of the circle and the geometry of solids ; to which are added elements of plane and spherical trigonometry / By John Playfair ...

John Playfair 1748-1819

The Elements of Euclid : viz. the first six books, together with the eleventh and twelfth / the errors ... corrected, and some of Euclid's demonstrations ... restored, also, The book of Euclid's Data in like manner corrected, by Robert Simson.

Euclid

מתמטיקה.

מתמטיקה.

מתמטיקה.

Lehrbuch der Trigonometrie / Grassmann.

Hermann Grassmann

Traité de trigonométrie / par J.A. Serret.

J.-A. Serret (Joseph Alfred), 1819-1885

Ebene und sphärische trigonometrie / von dr. Gerhard Hessenberg.

Gerhard Hessenberg 1874-1925