tan sin I am a sophomore, want to learn in advance, had better use some graphics to express, write clearly, can let me understand

tan sin I am a sophomore, want to learn in advance, had better use some graphics to express, write clearly, can let me understand

It is the English expression of tangent Tan, sine sin and cosine cos of angle
In short, in a right triangle, the sine of the acute angle of a right edge pair is equal to the right edge / hypotenuse, and the cosine = adjacent edge / hypotenuse
Tangent = opposite / adjacent
You can check it on the Internet