Applying the inscribed angle theorem, the measure of arc QS is: 168°.
What is the Inscribed Angle Theorem?
According to the inscribed angle theorem, the measure of an inscribed angle in a circle equals half of the measure of the intercepted arc.
Based on the inscribed angle theorem,
arc QS = 2(m∠QRS)
arc QS = 2(84)
arc QS = 168°
Therefore, applying the inscribed angle theorem, the measure of arc QS is: 168°.
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