Because an "angle" is by definition trigonometric, it's a ratio of a circle perimeter. You can also use an angle already formed by two vectors and won't need trigonometry. You can also use others things than trigonometric angles, such as spread from rational trigonometry
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Because an "angle" is by definition trigonometric, it's a ratio of a circle perimeter. You can also use an angle already formed by two vectors and won't need trigonometry. You can also use others things than trigonometric angles, such as spread from rational trigonometry
Sure. Point is, this double-reflection construction is in no sense unique in requiring "no trigonometric functions".
Right, it’s not unique