Trigonometry Videos

Angles & Trigonometric Functions

Converting Angle Measure in Degrees Minutes Seconds to Decimals

Converting Angle Measure in Decimals To Degrees Minutes Seconds

Determining if Two Angles are Coterminal

Operations With Angles in Degrees Minutes Seconds

Radians to Degress

Degrees to Radians

Arc Length of a Circle

Area of the Sector of a Circle

Converting Units

Angular Velocity (See Examples Below)

Example 1

Example 2

Example 3

Linear Velocity (See Examples Below)

Example 1

Example 2

Example 3

Example 4

Example 5

Find Six Trigonometric Values Given a Point on the Terminal Side

Find Remaining Trig Values Given One Trig Value

Find Exact Value of the Trig Function Using Reference Angles

Find All Six Trig Functions for the Angle of a Right Triangle

Solving Right Triangles

Applications of Right Triangles

Angle of Elevation Example 1 Angle of Elevation Example 2 Angle of Elevation Example 3

Angle of Depression Example 1 Angle of Depression Example 2 Angle of Depression Example 3

Write The Function in Terms of its Cofunction

Reference Angles

Find Trig Values Using Reference Angles

Graphs of the Trigonometric Functions

Amplitude, Period, Phase Shift, Vertical Translation

Graphing Sine

Graphing Cosine

Graphing Tangent

Graph Secant Function

Graph Secant Function With a Phase Shift

Graph Secant Function With a Phase Shift and a Vertical Shift

Graph Cosecant Function

Graph Cosecant Function With a Phase Shift

Graph Cosecant Function With a Phase Shift and a Vertical Shift

Graph Cotangent Function

Graph Cotangent Function With a Phase Shift

Graph Cotangent Function With a Phase Shift and Vertical Shift

Finding Trig Equation Given its Graph

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8

Trigonometric Identities

Proving Trigonometry Identities (See Examples Below)

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10

Evaluating Trig Functions Using Sum and Difference Identities (See Examples Below)

Example 1

Example 2

Sum and Difference Identities Finding Exact Value (See Examples Below)

Example 1

Example 2

Example 3

Example 4

Evaluating Trig Functions Using Half Angle Identities

Half Angle Identities (See Examples Below)

Example 1

Example 2

Evaluating Trig Functions Using Double Angle Identities

Double Angle Identities (See Examples Below)

Example 1

Example 2

Example 3

Product to Sum Identities (Video Coming Soon)

Solving Trigonometric Equations

Inverse Trig Functions (See Examples Below)

Part 1 Part 2 Part 3 Part 4

Pythagorean Theorem (Video Coming Soon)

Solving Trig Equations (See Examples Below)

Examples 1 & 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9

Applications Of Trigonometry

Law of Sine (See Below)

Part 1 Part 2 Part 3

Law of Cosine

Area of a Triangle

Applications of Law of Sine and Cosine (Video Coming Soon)

Magnitude and Direction of a Vector (See Examples Below)

Example 1 Example 2 Example 3 Example 4

Component Form of a Vector

Operations With Vectors

Horizontal and Vertical Components

Dot Product

Angle Between Two Vectors

Applications of Vectors (See Examples Below)

Vector Application: Find Magnitude and Angle of the Resultant Force

Vector Application: Find the Weight of a Safe Given Force to Hold It on a Ramp

Vector Application: Find Force Required To Pull Tortoise Up A Ramp

Vector Application: Airplane Course, Ground Speed, Drift Angle Example 1

Convert Polar Coordinates to Rectangular Coordinates

Convert Rectangular Coordinates to Polar Coordinates (See Examples Below)

Example 1 Example 2 Example 3 Example 4 Example 5

Convert Complex Numbers From Rectangular to Trigonometric Form

Convert Complex Numbers From Trigonometric Form to Rectangular Form

Multiplying Numbers in Trigonometric Form

Dividing Numbers in Trigonometric Form

DeMoivre's Theorem (Complex Numbers)

Nth Root Theorem (See Examples Below)

Example 1

Example 2

Find All Complex Solutions To An Equation (See Examples Below)

Trigonometry: Find All Complex Solutions Example 1

Trigonometry: Find All Complex Solutions Example 2

Trigonometry: Find All Complex Solutions Example 3