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Given a circle with tangent ST at S and chords PS and QS, if PST = 42^ and PQ = QR, determine QSP.
Mathematics
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10.2.1 Determine
Identify known angles and properties.
We are given that ST is a tangent to the circle at S, and .
By the Tangent-Chord Theorem, the angle between a tangent and a chord through the point of contact is equal to the angle in the alternate segment.
So, .Use the property of equal chords.
We are given . In a circle, equal chords subtend equal angles at the circumference
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