Question

ad is a median in triangle abc if a b square + AC square is equal to 122 and a b is equal to 6 then find BC

question no 5
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Answer 1

Answer:

10

Step-by-step explanation:

Applying Apollonius Theorem,

AB²+AC²=2(AD²+BD²)

But, BD=1/2 BC (AD is median)

∴AB²+AC²=2AD²+2(1/2*BC)²

AB²+AC²= 2AD²+1/2*BC²

Substituting the values given,

122= 2*6² +1/2*BC²

∴BC²= 2(122-2*36)

         =100

BC=√100

   ∴BC = 10

Hope this helps...

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Answer 2

Step-by-step explanation:

Answer = BC = 10

Don't thank I am Late .