I'm having a little trouble with this question and don't know where to start. If the length of tangent JM is 10 and JP is 4, find PQ.
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Try using the Secant-Tangent Theorem. $\displaystyle (JM)^{2}=JP\cdot{JQ}$ $\displaystyle (10)^{2}=4\cdot{JQ}$ $\displaystyle \frac{100}{4}=25=JQ$ Therefore, PQ=25-4=21
thanks, i knew there was a formula but couldnt remember which one
Yeah, there's a mess of them. But they sure can be handy to remember. If one didn't know it, it would be tricky trying to figure out.
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