Answer:
[tex]m\angle 1=\frac{1}{2} (m(SP)+m(QR))[/tex]
Step-by-step explanation:
The first choice is the right answer because it uses the right theorem, which states that "when two chords intersect inside a circle, the angle formed is half of the sum of the subtended arcs".
Applying the theorem to this problem, the angle for is [tex]\angle 1[/tex] and the arcs are SP and QR.
Therefore, the right answer here is the first choice.
