Trigonometry in 2016

A Level Mathematics: C3- Trigonometry-Further Trigonometric identities and their applications. by Ioannou, G. C.

Let's Laugh at Trig: A Simple Introduction to Trigonometry by Mozafari, Kaveh

Let's Laugh at Trig (Black and White): A Simple Introduction to Trigonometry (Black and White) by Mozafari, Kaveh

Problems and Solutions in Plane Trigonometry (LaTeX Edition): For the use of Colleges and Schools by Todhunter, Isaac

Essential Trigonometry by Singh, Saurya

Trigonometry 1 Applications of Trigonometry by Serdarushich, Vladimir

Trigonometry Formulae Practice Workbook by M, Subbiahdoss

Exact Values in Trigonometry: Five New Techniques by Dahal, Bhava Nath

Precise- Rewritten: Exact Values in Trigonometry by Dahal, Bhava Nath

Trigonometry by LLC

The Fractional Trigonometry: With Applications to Fractional Differential Equations and Science by Lorenzo, Carl F., Hartley, Tom T.

Trigonometric Functions and Complex Numbers: In Mathematical Olympiad and Competitions by Yang, Desheng