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A primer on the theory and beauty of angles, triangles, and their relationships

(1) Introduction

  • Introduction
  • The textbook
  • How to use the textbook
  • 1.1 Pythagoras' Theorem
  • 1.2 Special right triangles
  • 1.3 The sine function
  • 1.4 The cosine function
  • 1.5 The tangent function
  • The three Trig functions
  • Part I test
  • 2.1 Radian measure
  • 2.2 The unit circle
  • 2.3 Angles greater than pi/2
  • 2.4 Angles less than 0
  • 2.5 The arc functions
  • Part II test
  • 3.1 Introduction to identities
  • 3.2 Proving identities
  • 3.3 The Law of Sines
  • 3.4 The Law of Cosines
  • 3.5 The Law of Tangents
  • Part III test

(2) Part I: Introduction to Trigonometry

  • Introduction
  • The textbook
  • How to use the textbook
  • 1.1 Pythagoras' Theorem
  • 1.2 Special right triangles
  • 1.3 The sine function
  • 1.4 The cosine function
  • 1.5 The tangent function
  • The three Trig functions
  • Part I test
  • 2.1 Radian measure
  • 2.2 The unit circle
  • 2.3 Angles greater than pi/2
  • 2.4 Angles less than 0
  • 2.5 The arc functions
  • Part II test
  • 3.1 Introduction to identities
  • 3.2 Proving identities
  • 3.3 The Law of Sines
  • 3.4 The Law of Cosines
  • 3.5 The Law of Tangents
  • Part III test

(3) Part II

  • Introduction
  • The textbook
  • How to use the textbook
  • 1.1 Pythagoras' Theorem
  • 1.2 Special right triangles
  • 1.3 The sine function
  • 1.4 The cosine function
  • 1.5 The tangent function
  • The three Trig functions
  • Part I test
  • 2.1 Radian measure
  • 2.2 The unit circle
  • 2.3 Angles greater than pi/2
  • 2.4 Angles less than 0
  • 2.5 The arc functions
  • Part II test
  • 3.1 Introduction to identities
  • 3.2 Proving identities
  • 3.3 The Law of Sines
  • 3.4 The Law of Cosines
  • 3.5 The Law of Tangents
  • Part III test

(4) Part III

  • Introduction
  • The textbook
  • How to use the textbook
  • 1.1 Pythagoras' Theorem
  • 1.2 Special right triangles
  • 1.3 The sine function
  • 1.4 The cosine function
  • 1.5 The tangent function
  • The three Trig functions
  • Part I test
  • 2.1 Radian measure
  • 2.2 The unit circle
  • 2.3 Angles greater than pi/2
  • 2.4 Angles less than 0
  • 2.5 The arc functions
  • Part II test
  • 3.1 Introduction to identities
  • 3.2 Proving identities
  • 3.3 The Law of Sines
  • 3.4 The Law of Cosines
  • 3.5 The Law of Tangents
  • Part III test

Visit Fundamentals of Trigonometry (Udemy) to read more...

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