Completed
Introduction to Radians (3 of 3: Formal definition & conversion)
Class Central Classrooms beta
YouTube videos curated by Class Central.
Classroom Contents
Trigonometry and Measure of Angles
Automatically move to the next video in the Classroom when playback concludes
- 1 Exact Values for Trigonometric Ratios
- 2 Why Degrees?
- 3 Why is Trigonometry so important?
- 4 Manipulating the Trig Ratios in Geometry (example question)
- 5 The Basic Trig Ratios & their Reciprocals
- 6 Why are Sine & Cosine given their names?
- 7 Redefining the Trig Functions on the Unit Circle (1 of 2: The Basic Concept)
- 8 Redefining the Trig Functions on the Unit Circle (2 of 2: Understanding Non-Acute Angles)
- 9 How to Graph Trigonometric Functions (1 of 2: Sine)
- 10 How to Graph Trigonometric Functions (2 of 2: Cosine & Tangent)
- 11 Reading Values from Trigonometric Graphs
- 12 Odd & Even Functions (1 of 2: Introductory Examples)
- 13 Odd & Even Functions (2 of 2: Relevance to Trigonometry)
- 14 Cosine Rule: An Upgrade to Pythagoras' Theorem
- 15 Sine Rule: The Ambiguous Case
- 16 Why the Sine Rule Works (1 of 3: Acute Angles)
- 17 Why the Sine Rule Works (2 of 3: Right Angles)
- 18 Why the Sine Rule Works (3 of 3: Obtuse Angles)
- 19 3D Trigonometry: a notorious question (1 of 2: Setting up the diagrams)
- 20 3D Trigonometry: a notorious question (2 of 2: Working the numbers)
- 21 The Lighthouse (Challenging 3D Trig Question)
- 22 Introduction to Radians (1 of 3: Thinking about degrees)
- 23 Introduction to Radians (2 of 3: Defining a better way)
- 24 Introduction to Radians (3 of 3: Definition + Why Radians Aren't Units)
- 25 Radian Measure (1 of 4: The worth of Radians in Circles & Calculus)
- 26 Radian Measure (2 of 4: Finding ratio between arc length and radius - Why use 'pi'?)
- 27 Radian Measure (3 of 4: Finding the formula for the area of a sector in radians)
- 28 Radian Measure (4 of 4: Solving Trigonometry with Radians and advantages for calculus)
- 29 Circles and Radian Measure (Using Area of Triangle and Sector to find the Area of a Segment)
- 30 Trigonometric Functions: Angles of Any Magnitude (1 of 2: The unit circle)
- 31 Trigonometric Functions: Angles of Any Magnitude (2 of 2: Obtuse & reflex angles)
- 32 Meanings of the Trigonometric Ratios (1 of 4: Re-introducing the Unit Circle)
- 33 Meanings of the Trigonometric Ratios (2 of 4: Why is one of them called "tangent"?)
- 34 Meanings of the Trigonometric Ratios (3 of 4: Why is one of them called "secant"?)
- 35 Meanings of the Trigonometric Ratios (4 of 4: Dynamic visualisation)
- 36 Y11 Maths Ext 1 Quiz (3 of 3: Graphs of Trig Functions)
- 37 Introduction to Radians (1 of 3: Comparing measurement systems)
- 38 Introduction to Radians (2 of 3: Developing an initial sense)
- 39 Introduction to Radians (3 of 3: Formal definition & conversion)
- 40 Exact Values (1 of 4: Radians vs. Degrees)
- 41 Exact Values (2 of 4: Solving a basic trigonometric equation)
- 42 Exact Values (3 of 4: Using the unit circle for trigonometry)
- 43 Exact Values (4 of 4: Why "tan" is short for "tangent")
- 44 Graphs of Basic Trigonometric Functions (1 of 3: Investigating the unit circle with spaghetti)
- 45 Graphs of Basic Trigonometric Functions (2 of 3: The features of trigonometric curves)
- 46 Graphs of Basic Trigonometric Functions (3 of 3: Graphing examples)
- 47 3D Trigonometry Example (1 of 2: Setting up the triangles)
- 48 3D Trigonometry Example (2 of 2: Combining the information)
- 49 3D Trig Three Observer Problem (1 of 4: Setting up the diagram)
- 50 3D Trig Three Observer Problem (2 of 4: Determining ground distances)
- 51 3D Trig Three Observer Problem (3 of 4: Calculating ground angles)
- 52 3D Trig Three Observer Problem (4 of 4: Resolving the ambiguous case)
- 53 Circular Measure: Arc Length, Sector & Segment Area Formulas
- 54 Sine Rule - example test question
- 55 Cosine Rule - example test question
- 56 Dartboard Question (1 of 2: Area)
- 57 Dartboard Question (2 of 2: Percentage & perimeter)
- 58 Measuring a Wedge
- 59 Trigonometry in Right Triangles (5 of 5: Applied problems)
- 60 Trigonometry in Right Triangles (4 of 5: Exact values & reciprocals)
- 61 Trigonometry in Right Triangles (3 of 5: Finding an angle)
- 62 Trigonometry in Right Triangles (2 of 5: Evaluating ratios & angles)
- 63 Trigonometry in Right Triangles (1 of 5: Reviewing the ratios)
