Evaluate -cot(pi/2)csc(pi/2)

$- \cot (\frac{π}{2}) \csc (\frac{π}{2})$

The exact value of $\cot (\frac{π}{2})$ is $0$ .

$- 0 \csc (\frac{π}{2})$

Multiply $- 1$ by $0$ .

$0 \csc (\frac{π}{2})$

The exact value of $\csc (\frac{π}{2})$ is $1$ .

$0 \cdot 1$

Multiply $0$ by $1$ .

$0$