Resolver cotA-cscA=1/P

$$\cot A - \csc A = \frac { 1 } { P }$$

Ebatzi: P (complex solution)

$$\left\{\begin{matrix}P=\frac{i\sin(A)}{i\cos(A)-i}\text{, }&\nexists n_{1}\in \mathrm{Z}\text{ : }A=\pi n_{1}\\P\neq 0\text{, }&\exists n_{2}\in \mathrm{Z}\text{ : }A=2\pi n_{2}\text{ and }\nexists n_{1}\in \mathrm{Z}\text{ : }A=\pi n_{1}\end{matrix}\right.$$

Ebatzi: P

$$P=-\cot(\frac{A}{2})$$

$$\exists n_{1}\in \mathrm{Z}\text{ : }\left(A>\pi n_{1}\text{ and }A<\pi n_{1}+\pi \right)$$