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Simple explanation of the trigonometric functions sine, cosine and tangent. We will see how they are defined starting from the trigonometric circumference, what their graphs are and how they are connected to each other. Sine, cosine and tangent are the 3 most recurring functions in trigonometry, and based on them, several fundamental theorems of trigonometry can be stated. Understanding how these trigonometric functions are defined is therefore fundamental to be able to then carry out the trigonometry exercises. You can find many more videos on goniometry and trigonometry in the playlist ✔ http://goo.gl/pyH9l Follow me on Facebook & Instagram, it's the cool thing to do these days ;) ✔ / lessthan3math ✔ / elia.bombardelli Information on the video lessons and complete list ✔ https://goo.gl/zq67Eo The equipment I use to create the videos ✔ http://amzn.to/2y73tlW Subscribe to the channel, many more videos coming soon ✔ http://goo.gl/PH8ZF1 ____________________________________________________________ Thanks to everyone for the LIKES, SUBSCRIPTIONS and COMMENTS =) LessThan3Math is the section of my channel created with the aim of giving a hand to as many students as possible. If you find the video lessons useful and want many more to be made, you can support the project. Check it out here: ✔ https://goo.gl/JMLRtH ____________________________________________________________ Only for collaboration proposals or important communications [email protected] for other communications or requests use the Facebook page The background music at the beginning and end of the video comes from https://incompetech.com/ (Kevin MacLeod - Royalty Free Music)