be kind to your self, it is only one and perishable of many on the planet

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"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"

http://math.stackexchange.com/posts...

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"

http://math.stackexchange.com/posts...