The case of the disappearing angle units, or "the dangle of the angle"

[Albert Chan]

(08-03-2019 01:11 PM)Claudio L. Wrote:  SIN( INV(INV(90°)))

Now you need to compute the INV() of an angle... so you convert those 90 degrees to pi/2, invert and later you invert again and end up with SIN(pi/2) but wait... in DEG mode SIN() was expecting a number in degrees, not in radians! How would the system know that when the user does SIN( INV(INV(90°))) it will receive the angle already in radians, but if the user just does SIN(90) it's in degrees?
A whole tracking system was put in place ...

Under DEG mode, my guess is 90° = 90, not pi/2

thus SIN(INV(INV(90°))) = SIN(90) = 1, as expected