Trigonometry: The six trigonometric functions
 This is a free lesson from our course in Trigonometry

 This lesson content introduces and walks you through the basic concept, relations and properties used to find the trigonometric values of any angle. You'll learn it with the help of some examples, practice questions with solution, and video explanation by the instructor. A triangle in which one angle is a right angle 90. If is the acute angle of a right triangle, the horizontal leg of the triangle is called 'adjacent' and denoted by x. The vertical leg is known as 'opposite' which is denoted by y and the other remaining leg is called the 'hypotenuse' which is usually denoted by r. (More text below video...)
 Other useful lessons:
(Continued from above) The six trigonometric functions of are as follows:
 sine () = opposite/hypotenuse =  y/r.           cosine () = adjacent/hypotenuse = x/r.           tangent () = opposite/adjacent = y/x.           cosecant () = hypotenuse/opposite = r/y.           secant () = hypotenuse/adjacent = r/x.           cotangent () = adjacent/opposite = x/y.
Winpossible's online math courses and tutorials have gained rapidly popularity since their launch in 2008. Over 100,000 students have benefited from Winpossible's courses... these courses in conjunction with free unlimited homework help serve as a very effective math-tutor for our students.
 - All of the Winpossible math tutorials have been designed by top-notch instructors and offer a comprehensive and rigorous math review of that topic. - We guarantee that any student who studies with Winpossible, will get a firm grasp of the associated problem-solving techniques. Each course has our instructors providing step-by-step solutions to a wide variety of problems, completely demystifying the problem-solving process! - Winpossible courses have been used by students for help with homework and by homeschoolers. - Several teachers use Winpossible courses at schools as a supplement for in-class instruction. They also use our course structure to develop course worksheets.

 Copyright © Winpossible, 2010 - 2011 Best viewed in 1024x768 & IE 5.0 or later version