The perpendicular AD on the base BC of a `triangleABC` intersects BC at D, so that DB=3CD. Prove
Channel: Doubtnut
Date: 2019-12-27

The perpendicular AD on the base BC of a `triangleABC` intersects BC at D, so that DB=3CD. Prove that `2AB^(2)= 2AC^(2)+BC^(2)`

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