PQ and PR are two chords in 0 central circle The tangents drawn at points Q and P intersect at point s. If QSR = 70, what is the value of QPR?
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Answer:
Here ∠OSQ=∠OQS=90
o
−50
o
=40
o
and∠RSQ=∠SRO=90
o
−60
o
=30
o
.
∠QSR=40
o
+30
o
=70
o
.
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