# Question #0583a

##### 2 Answers

see explanation.

#### Explanation:

Given that

As

Intersecting chord theorem : when two chords intersect each other inside a circle, the products of their segment are equal.

By Pythagorean Theorem:

Hence,

Sol. 2. (see explanation).

#### Explanation:

Solution 2.

As kindly suggested by Ratnaker Mehta, the following results are very useful in such geometrical problems.

(1)

(2)

(3)

proof :

(1)

(2)

(3)