March 2023
Beginner
400 pages
9h 38m
English
Content preview from Trigonometry For Dummies, 3rd Edition
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Chapter 16
Solving Trig Equations
IN THIS CHAPTER
Solving equations within limits
Expanding the pool of answers for equations
Incorporating algebra techniques
Getting creative with identities
Solving multiple-angle equations
Letting a graphing calculator do the dirty work
Solving equations involving trigonometric expressions takes a pinch of this, a dab of that, a gentle stirring, and just the right temperature. No, this book isn’t for a cooking class, but solving these equations requires the proper preparation and some skill — just like a successful dish.
Trig equations aren’t identities. An identity is true for any angle in the domain of the function involved. A trig equation is true for some specific angles or input — if the equation has a solution at all. It’s just like solving ...
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