Elements of Plane Trigonometry

Title:  Elements of Plane Trigonometry 
Author:  
Hugh Blackburn
Publisher: Macmillan and co 1871
Format:  PDF
Number of pages: 143
Description:
Trigonometry is the science of the numerical relations between the sides and angles of triangles. This treatise is intended to demonstrate how from given values of some of the sides and angles of a triangle to calculate, in the most convenient way, all the others.

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Source:    http://www.gutenberg.org/files/32973/32973-pdf.pdf

Elements of Plane Trigonometry

Title:  Elements of Plane Trigonometry 
Author:  
Hugh Blackburn
Publisher: Macmillan and co 1871
Format:  PDF
Number of pages: 143
Description:
Trigonometry is the science of the numerical relations between the sides and angles of triangles. This treatise is intended to demonstrate how from given values of some of the sides and angles of a triangle to calculate, in the most convenient way, all the others.