Question

what is ( mangle s )?
( mangle s = square^circ )

Explanation:

Step1: Recall cyclic quadrilateral property

Opposite angles sum to $180^\circ$.

Step2: Set up angle equation

$m\angle S + m\angle U = 180^\circ$

Step3: Solve for $m\angle S$

$m\angle S = 180^\circ - 97^\circ$

Answer:

$83^\circ$