Question

In triangle AB, AB=AC and D is any point on BC. Prove that AB²— AD² = BD x CD.

Answer 1

Step-by-step explanation:

join D to A such that it divides BC in to 2 equal parts as BD & CD take it as 1

now in triangle ABD by pytha

ABsq = BDsq + ADsq

&

BDsq =ABsq-ADsq

take it as 2

now substitute 1 in 2

we get ABsq-ADsq=BD(DC)

Answer 2

Answer:

HERE IS THE CORRECT ANSWER

Step-by-step explanation:

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