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home | Geometry Sample Video Lessons | Step-by-Step Trigonometry Lessons - . . .
 

Step-by-Step Trigonometry Lessons - Learn from Worked Problems
Example Lesson - Double Angle Identities in Trigonometry



This clip is just a few minutes of a multi-hour course.  
Master this subject with our full length step-by-step lessons!
   


Summary of Our Teaching Style
- All Courses Taught by Jason Gibson - Former NASA Flight Controller and Rocket Scientist.
- Lessons taught by working example problems.
- Lessons taught step-by-step.
- Thousands of students have improved grades with our courses!




- Geometry:
1) Acute, Obtuse, and Right Angles in Geometry                          
2) Alternate Interior Angles in Geometry
3) The Pythagorean Theorem
4) Area of a Circle in Geometry

- Probability / Statistics:
1) What is a Permutation?
2) Addition Rules of Probability
3) Conditional Probability
- Trigonometry & Pre-Calculus, Vol 1:
1) Complex Numbers
2) Exponential Functions
3) Sin, Cos, Tan with Triangles

- Trigonometry & Pre-Calculus, Vol 2:
1) Pythagorean Trig Identities
2) Double Angle Trig Identities
3) Product-to-Sum Trig Identities
4) The Law of Cosines