The Elements of Trigonometry: Containing, the Properties, Relations, and Calculations of Sines, Tangents, Secants, The Doctrine of the Sphere, and the Principles of Plain and Spherical Trigonometry; All Plainly and Clearly Demonstrated: Buy The Elements of Trigonometry: Containing, the Properties, Relations, and Calculations of Sines, Tangents, Secants, The Doctrine of the Sphere, and the Principles of Plain and Spherical Trigonometry; All Plainly and Clearly Demonstrated by Emerson William at Low Price in India