{"product_id":"advanced-trigonometry-9780486432298","title":"Advanced Trigonometry","description":"This 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.\u003cbr\u003e","brand":"Dover Publications","offers":[{"title":"Default Title","offer_id":50649807880466,"sku":"9780486432298","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_3054ffb1-b44d-427c-9d78-d7e158d39e8e.jpg?v=1733274627","url":"https:\/\/surprise-castle.myshopify.com\/products\/advanced-trigonometry-9780486432298","provider":"Surprise Castle","version":"1.0","type":"link"}