related, on Wikipedia: – Trigonometric Functions — review basic trigonometric functions back on high school mathematics. – Transformation Matrix — linear algebra, R2 transformation matrix, etc. – Euler’s Formula — natural logarithm base leads to something head-imploding. or not. Reply

related, on Wikipedia:

– Trigonometric Functions — review basic trigonometric functions back on high school mathematics.

– Transformation Matrix — linear algebra, R2 transformation matrix, etc.

– Euler’s Formula — natural logarithm base leads to something head-imploding. or not.

by the way. you know who you are. ðŸ˜‰