#### Question

In Fig., if AB = AC, prove that BE = EC

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#### Solution

Since tangents from an exterior point to a circle are equal in length.

∴ AD = AF [Tangents from A]

BD = BE [Tangents from B]

CE = CF [Tangents from C]

Now,

AB = AC

⇒ AB – AD = AC – AD [Subtracting AD from both sides]

⇒ AB – AD = AC – AF [Using (i)]

⇒ BD = CF ⇒ BE = CF [Using (ii)]

⇒ BE = CE [Using (iii)]

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#### Reference Material

Solution for question: In Fig., if AB = AC, prove that BE = EC concept: null - Circles Examples and Solutions. For the course CBSE