# Trig Identities / Computation Lessons 00:10:41

### Compute using Trig Identities 1

• Using Trig Identities to make computations. 00:08:21

### Compute using Trig Identities 2

• Using Trig Identities to make computations. 00:11:01

### Compute using Trig Identities 3

• Using Trig Identities to make computations. 00:04:58

### Compute using Trig Identities 4

• Using Trig Identities to make computations. 00:09:57

### Compute using Trig Identities 5

• Using Trig Identities to make computations. 00:19:00

### Derive Cosine of a Sum Identity

• This video shows the formula for deriving the cosine of a sum of two angles. 00:14:33

### Derive Tangent of Sum and Examples

• This video derives the identity for the tangent of the sum and difference of angles (or real numb... 00:18:04

### Derive Trig Half Angle Identities

• Video derives the half angle trigonometry identities for cosine, sine and tangent 00:14:34

### Graphing Trig Functions Handout

• This video shows how to graph these 4 trig functions from a Graphing Handout: y=2sinx, y=(1/2)sin... 00:15:57

### Trig Double Angle Formula

• Video derives the double angle trigonometry formula and provides examples using the formula.