Trigonometry For Dummies
Learn to:Solve tricky trig equationsGraph functions and figure out formulasUse trigonometry to solve practical problemsYour guide to getting  an angle on sines, cosines, and tangentsConfused by cosines? Perplexed by polynomials? Don’t worry! This friendly guide takes the torture out  of trigonometry by explaining everything in plain English, offering lots of easy-to-grasp examples, and adding  a dash of humor and fun. You’ll see the ways trig applies to everyday life, and how it’s an important tool for a variety of careers.Start with basics — get up and running with an overview of trig functions, radians, and moreLearn tricky trig functions — take things to the next level with SOH-CAH-TOA and circular functionsIdentify identities — dig into reciprocal, ratio, opposite-angle, and Pythagorean identitiesMake trig work — get practical with trig, find out how to use your calculator for complex solutions, and solve trig equationsGraph functions — figure out the basics of graphing sine, cosine, tangent, cotangent, and moreOpen the book and find:Definitions of trigonometry functionsHow to get down with Pythagoras and his theoremWays to use Cartesian coordinatesThe lowdown on the sine, cosine, and tangent functionsHow to go 'round and 'round with circular functionsThe scoop on inverse trigonometryDetails on graphing trig functionsTen basic identities and ten not-so-basic identities