n9nlinear
scienceisbeauty:

One of the answers to the topic: Visually stunning math concepts which are easy to explain at Mathematics Stack Exchange.

I think if you look at this animation and think about it long enough, you’ll understand:
Why circles and right-angle triangles and angles are all related
Why sine is opposite over hypotenuse and so on
Why cosine is simply sine but offset by pi/2 radians

scienceisbeauty:

One of the answers to the topic: Visually stunning math concepts which are easy to explain at Mathematics Stack Exchange.

I think if you look at this animation and think about it long enough, you’ll understand:

  • Why circles and right-angle triangles and angles are all related
  • Why sine is opposite over hypotenuse and so on
  • Why cosine is simply sine but offset by pi/2 radians