O'Reilly logo

Trigonometry For Dummies, 2nd Edition by Mary Jane Sterling

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 17

Solving Trig Equations

In This Chapter

arrow Solving equations within limits

arrow Expanding the pool of answers for equations

arrow Incorporating algebra techniques

arrow Getting creative with identities

arrow Solving multiple-angle equations

arrow 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.

remember.eps 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.

Some trig equations require ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required