TR is the tangent to the circle PQR with centre O. Find the size of ∠PRT

daudallizzwell

12 years ago

Join the point R with point Q to form line |QR|.

Having done that, consider triangle ROQ













= 44 + 16

= 60 degrees (Option C)

Usammy

9 years ago

Here is an explanation:

The angle between the tangent to a circle and a chord through the point of contact is equal to the angle at the alternate segment.



REF: Check: Comprehensive Mathematics, page 150

DoctorTy

12 years ago

it's a nice site it's cool