How to simplify if $a > 0$ and $\cos(a) < 0$
Was a previous post. Correction, it was suppose to be if a > 0 & cos(a) > 0.
An answer was given. https://math.stackexchange.com/a/1274372/575423
Does this change the solution given?, if so how, exactly how? (Including the "evaluates to" part!)
Simplification of sin(pi^x) , with x being a positive irrational number
sin(pi^x) ----> ((y)) has to be a negative irrational.
Regarding bounds: x is -2pi < x < 2pi.
The range of cos(a) and (a) is 0 < a < 2.
If you're asking how to simplify $\sin(\pi^x)$ where $x$ is a positive irrational number, the answer is that in general there is no such simplification.