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# question halp plz

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Let $$\overline{TU}$$ and $$\overline{VW}$$ be chords of a circle, which intersect at S, as shown. If ST = 3, TU = 15, and VW = 3, then find SW.

I have found the answer 6 before but that was wrong.

thx in advance

Jun 29, 2020

### 5+0 Answers

#1
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by the circle secant rule, SW would be 9 because

ST(SU)=SV(SW)

3(18)=SV(3+SV)

SV= 6 or -9, -9 being the extraneous solution.

Jun 29, 2020
#2
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hmm so as i stated in my question 6 was not corecct also i dont think its possible to have a negitive number in the answer... I do understand what you were saying tho. Thxs anyways

Guest Jun 29, 2020
edited by Guest  Jun 29, 2020
#3
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yeah, is SV is 6 then SW is 9 right? 6+3=9

bunnybeer  Jun 29, 2020
#4
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oh! yeah your correct! I must have read to fast i guess... Thank you so much!!!

Guest Jun 30, 2020
#5
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no problem

bunnybeer  Jun 30, 2020