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Learn Trigonometry - Basic Trigonometry - Introduction to trigonometry

Hey guys! This is Super Alvi. Have you heard of Salman Khan? Well, he's a Bangladeshi and he's a great teacher and inspiration for me. He lives in the America. I like his this lesson. So, I'm posting this. If you need some more of trigonometry you can go around his website (khanacademy.org). Feel free to ask me anything. :)
Basic Trigonometry: Introduction to trigonometry

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  1. is the study of triangles. In particular, right angled triangles come in for much attention, as they happen to have particularly nice properties. Pythagoras' theorem relating the lengths of the sides to Learn Trigonometry

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