Answer:
Option D) 90°
Step-by-step explanation:
It is given in a circle with center O, triangle TBC is formed in a semicircle.
We know If ∠ O is the angle formed at center, ∠T will be half of the measure of central angle O. (inscribed angle conjecture)
∠ T = [tex]\frac{1}{2}[/tex] of ∠O
= [tex]\frac{180}{2}=90[/tex]
Therefore, measure of the angle inscribed in a semicircle will be 90°
Option D). 90° is the correct option.
