Trigonometry

• Tác giả: Richard W Beveridge
• Ngôn ngữ: eng
• Thông tin xuất bản: [Place of publication not identified] Richard W. Beveridge 2014
• Mô tả vật lý: 1 online resource
• Bộ sưu tập: Tài liệu truy cập mở
• ID: 192194
• Chủ đề: 1. Mathematics

Tóm tắt

The precursors to what we study today as Trigonometry had their origin in ancient Mesopotamia, Greece and India. These cultures used the concepts of angles and lengths as an aid to understanding the movements of the heavenly bodies in the night sky. Ancient trigonometry typically used angles and triangles that were embedded in circles so that many of the calculations used were based on the lengths of chords within a circle. The relationships between the lengths of the chords and other lines drawn within a circle and the measure of the corresponding central angle represent the foundation of trigonometry - the relationship between angles and distances.