{"product_id":"9780486154435","title":"Advanced Trigonometry","description":"\u003cbr\u003e\u003cbr\u003eThis volume will provide a welcome resource for teachers seeking an undergraduate text on advanced trigonometry, when few are readily available. Ideal for self-study, this text offers a clear, logical presentation of topics and an extensive selection of problems with answers. Contents include the properties of the triangle and the quadrilateral; equations, sub-multiple angles, and inverse functions; hyperbolic, logarithmic, and exponential functions; and expansions in power-series. Further topics encompass the special hyperbolic functions; projection and finite series; complex numbers; de Moivre's theorem and its applications; one- and many-valued functions of a complex variable; and roots of equations. 1930 edition. 79 figures.","brand":"Dover Publications","offers":[{"title":"Default Title","offer_id":47112136098032,"sku":"9780486154435","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9780486154435_p0.jpg?v=1763708471","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780486154435","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}