Question

In the given figure, XY and X′Y′ are two parallel tangents to a circle with

centre O and another tangent AB with point of contact C intersecting XY at A

and X′Y′ at B. Prove that ∠ AOB = 90°.​

Answer 1

The answer for the given riddle is pencil.

Explanation:

The hints for the riddle are iam from a mine and wood is major hint.

Generally natural resources like coal, diamond, graphite, iron are from mines.

In the above natural resources generally graphite is surrounded by wood and daily used by us as pencil for writing.

Answer 2

Hope this will help you.