Trig: Sum, Difference &Double Angle Identities 355

This lesson is part of the following series:

Trigonometry (10 lessons, $37.62)

This 73 minute trigonometry lesson focuses on the four sum and difference identities: sin (A + B ), sin (A – B), cos (A + B), and cos (A - B). We'll also look at the double angle identities: sin (2A) and cos (2A).

This lesson show you how to find:
- exact value of angles using the sum and difference identities and special angles
- write the sum and difference identities as single trig expressions
- simplify expressions using the sum and difference identities
- find the formulas for the double angle identities using the sum & difference identities

This lesson contains explanations of the concepts and 20 example questions with step by step solutions plus 5 interactive review questions with solutions.

Lessons that will help you with the fundamentals of this lesson include:
- 315 Basic Trigonometry Part II (http://www.mindbites.com/lesson/5123)
- 320 Trigonometry on the coordinate Plane (http://www.mindbites.com/lesson/5122)
- 350 Simplifying Trig Expressions & Proving Trig Identities (http://www.mindbites.com/lesson/5119)

Teacher Sydney is a certified teacher, B.A., B. Ed. (Math Major) with 30+ years experience teaching Math to High School and Continuing Education students. She developed these very comprehensive, detailed audio visual math tutorials to help those who were serious about learning math. Her success stories with students are numerous, from students who said to her "I never understood math until your classes" to adult students who went on to successful careers, one providing feedback "Your adult ed classes enabled me to meet university entrance requirements and, ... I am now an Engineer, thank you!". She had a reputation for teaching the math class that “you want to be in.” For more...

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04/14/2012

~ Lucas5

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