Answer:
A. 12
Explanation:
You want to know the length of tangent PQ, given that secant QS has segments QR = 8 and RS = 10. Points P, R, and S are on the circle. Point Q is external to the circle.
Secant relation
The relevant relation is ...
PQ² = QR·QS
x² = (8)(8+10) = 144
x = √144 = 12
The value of x is 12.
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