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For me it was associating (sin(r), cos(r)) with a direction (on the unit circle), instead of with a triangle. After that, the relation with a triangle where the
by meuk 9y ago
For me it was associating (sin(r), cos(r)) with a direction (on the unit circle), instead of with a triangle. After that, the relation with a triangle where the longest side has unit length is obvious.
- hexane360 9y agoDon't you mean (cos(r), sin(r))? I guess your method works if your angle starts at north and increases clockwise.