The black lines end (the end touching the circle) has the X position as the cosine of that direction. Same goes with the sine, but with the Y position. The circle's radius is 1. This project doesn't use any sine/cosine blocks to prove this. It is not the most accurate thing in the world, but it is like 99.99% accurate.
Fun fact: the hypotenuse (the longest line) will always have a length of 1 because the circle's radius always stays the same. No matter the different length of the Opposite and the Adjacent, that hypotenuse(black line) is always the same size. In the Pythagoras Theorem, the: Sqrt of ((Adjacent) ^ (2)) + ((Opposite) ^ (2) Is the length of the hypotenuse. In this case, since the sine and cosine of the same direction are relative to the hypotenuse, all these triangles in the animation have the same hypotenuse length. (I overexplained this) (please heart ;-;) (I have way too much free time ;-;) Tags: #Trigonometry #Triangle #Cosine #Cos #Sine #Pen #help