Online Course in Trigonometry  
   
Here are the samples of lessons from our course in Trigonometry. These samples will play only the instruction for any given section. The preview will not have access to other premium features such as interactive question-answers, quizzes and your personal progress tracker.
Trigonometry
Lesson 1: Angles and Their Measures
Getting Started - Angles and Their Measures
Degree and Radian Measurement of angles
Conversion Between Degrees and Radians
Lesson 2: Trigonometric Functions
Getting Started - Trigonometric Functions
Definitions of Trigonometric Functions
The unit circle, Sine, and Cosine
Graphs of Sine and Cosine Functions
Lesson 3: Trigonometric Identities
Getting Started - Trigonometric Identities
Pythagorean Trigonometric Identity
Verifying Trigonometric Identities
Lesson 4: Trigonometric Functions and their graphs
Graphing Tangent, Cotangent, Cosecant and Secant Functions
Graphing Sinusoids
Tangent of an Angle
Lesson 5: Evaluating Trigonometric Functions
Trigonometric Functions - Angles
Trigonometric functions of any angle
Finding reference angles
Lesson 6: Inverse Trigonometric Function
Meaning: Inverse Trigonometric Functions
Evaluating Inverse Trigonometric Functions
Solving Trigonometric Equations
Lesson 7: Sine and Cosine Formulas
Sum and Difference Formulas
Using Sum and Difference Formulas
Double and Half Angle Formulas
Using Double and Half Angle Formulas
Lesson 8: Right Triangle Trigonometry
The six trigonometric functions
Solving Right Triangles
Lesson 9: Laws of Sines and Cosines
Definition - Law of Sines & Cosines
Using the law of Sines and Cosine Formulas
The Ambiguous Case
Area of a Triangle
Lesson 10: Applications of Trigonometry
Angles of Elevation and Depression
Real-World Applications
Indirect Measuring with triangles
Lesson 11: Polar Coordinate System
Name Polar Coordinates
Polar -Rectangular Coordinates Conversion
Convert Equation from Polar to Rectangular Form
Lesson 12: Complex Numbers
The Complex Number System
Polar Form of Complex Numbers
Multiplication of Complex Numbers
Lesson 13: De Moivre's Theorem
Getting Started - De Moivre's Theorem
Using De Moivre's Theorem
Roots of Complex Numbers
 
       
     
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