QuestionDetermine if $\csc \left[(4 n+3) \cdot 90^{\circ}\right]$ equals $0, 1, -1$, or is undefined for integer $n$.

Studdy Solution
Finally, we take the reciprocal of the sine function to find the value of the cosecant function.
$$\csc(270^{\circ}) = \frac{1}{\sin(270^{\circ})} = \frac{1}{-1} = -1$$So, the expression $\csc \left[(4 n+3) \cdot90^{\circ}\right]$ is equal to $-1$.