# Trigonometry Video Lessons

### Domain of a Function

More examples of Trigonometry can be found by go to the home math page, from there click the Video Lessons button, then scroll down to find Trigonometry section. This section will be continue developed.

The purpose of this website is to help students understand the topic of the mathematics talked in class. Help students improve the ability of self-studding. Hope students could listen carefully to the video and do the example your-self in order to find which concept to apply to solve this kind of problem, and review them later. Hope students could spend time on most important things such as, reading, writing, mathematics and science.

Mathematics can be self-learning. By good understanding mathematics, you can graduate from college no more than four years. So, you need to set a goal and works for your future, make progress each day, and get confident about yourself. Do each example yourself will help deep understanding those concepts in these topics. Opportunity is always for those who are prepared.

Content: any angle trigonometry functions, same angle trigonometry functions, double angle trigonometry functions, draw graph of sine functions, draw graph of cosine functions, sine graph property, sine graph applications, draw graph of a tangent function, domain of a function, maximum and minimum values of a function, trigonometry functions, find the angle a, sine law and cosine law

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