Math, asked by priyayadav4, 1 year ago

In Triangle ABC,AD is a median . If AB×AB+AC×AC=148 & AD=7, Find BC

Answers

Answered by Abhideshmukh

2

Answer:

Step-by-step explanation:

AB2 +AC2=2AD2 +2BC2 .. APOLLONIUS THEOREM

148=98+2BC2

148-98=2BC2

50=2BC2

50÷2=BC2

25=BC2

Therefore BC=5

priyayadav4: Thank you

tamobhai: np

Answered by Abhideshmukh

2

Answer:

Step-by-step explanation:

AB2 +AC2=2AD2 +2BC2 .. APOLLONIUS THEOREM

148=98+2BC2

148-98=2BC2

50=2BC2

50÷2=BC2

25=BC2

Therefore BC=5

tamobhai: how 1×1 =2

tamobhai: so how 2AB×2AB =2

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