Hint
$$\dfrac{\csc(z)}2=e^{iz}$$
If $e^{iz}=a,$
Using Intuition behind euler's formula
$2a=\dfrac{2i}{a-1/a}$ as $a\
e0$
$a^2-1=i$
$a^2=\sqrt2e^{i\pi/4}$
Hint
$$\dfrac{\csc(z)}2=e^{iz}$$
If $e^{iz}=a,$
Using Intuition behind euler's formula
$2a=\dfrac{2i}{a-1/a}$ as $a\
e0$
$a^2-1=i$
$a^2=\sqrt2e^{i\pi/4}$