**Elements of Plane Trigonometry**

by Hugh Blackburn

**Publisher**: Macmillan and co 1871**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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