Question

Can someone explain me Taales theorem?
pleasee

Answer 1

Thales theorem is a corollary of the theorem, which states that the angle subtended by an arc at any point on the circumference is half of the angle subtended by it at the centre. For example if the arc AC

subtends angle ∠AOC

at the centre and ∠ABC

any where else on the circumference,

∠ABC=12∠AOC

and if AOC

is a diameter, it forms an angle of 180∘

and angle subtended by it at any point on circumference is

12×180∘=90∘