Calculator test

[AnnoyedOne]

(Today 06:10 PM)Commie Wrote:  ...what does the calculator do with the excess sine circles? On any calculator for that matter...

First, thanks for the compliment.

Second trigonometric functions (and some others) are both cyclical and symmetrical. Ask any EE/mathematician/physicist.

2.pi is the cycle length for trigonometric functions but -pi/2 to pi/2 works better for some purposes. Its that simple.

In theory calculating from 0 to pi/2 is sufficient because of symmetry.

A1

PS: As an aside this is where 'k' comes in above. Symmetry. Most simply assume that k=1 and move on.