Step 1: Identify the given angles and the angle to be found.
The points P, Q, R, S, T lie on a circle.
We are given:
∠QPT=85∘
∠RQS=25∘
We need to find x=∠TBQ.
Point B is the intersection of chords PS and TQ.
Step 2: Use the property of inscribed angles.
An inscribed angle is half the measure of its intercepted arc. Conversely, angles subtended by the same arc are equal.
• ∠QPT=85∘. This angle subtends arc QT.
• ∠RQS=25∘. This angle subtends arc RS