Trigonometry

Basic Trigonometry

• Definitions
• Using Tan to find angle
• Using Tan to find side
• Using Sine to find angle
• Using Sine to find side
• Using Cos to find angle
• Using Cos to find side
• Which ratio?
• Finding the hypotenuse

Formulae

• Trig refresher
• sec, cosec & cot
• Compound formulae
• Double Angle
• Half Angle
• Product formulae
• Multiple Angle
• Algebra - Solving Trig equations

Area of a triangle, Sine Rule, Cosine Rule

• Area of a triangle - derivation
• Area of a triangle - example
• Sine Rule - derivation
• Sine Rule- Example
• Cosine Rule - derivation
• Cosine Rule- Examples
• Sine & Cosine Rule- refresher
• Which rule to use ? SSS,etc

Compound Formulae (Higher)

• Deriving compound angle
• Compound angle formulae - Examples

Trig Families

• Amplitude and Period definition
• Click to see which quadrant an angle lies in.
  Excel (125 KB)

Amplitude and Phase angle

• See how trig graphs
  are affected by a change in amplitude or phase angle.
  Excel (1737 KB)

Radians (Higher)

• Radians
• Converting degrees to Radians
• Exact values Radians & Degrees
• Using exact values : Radians & Degrees
• Conversion table

The Wave Function (Higher)

• Adding two waves
• Subtracting two waves
• Express in the form cos(x+a)
• Express in the form sin(x-a)
• Express in the form sin(x+a)
• Multiple Angles
• Maximum / Miminum Value
• Sketching graphs
• Solving equations