Mathematics for IGCSE & O level - Circle Theorems (Section 3 - No. 12)
What is the measure of the angle between a tangent and a chord drawn from the point of tangency?
Half the angle subtended by the chord at the center.
Twice the angle subtended by the chord at the center.
Equal to the angle in the alternate segment.
Unrelated to the angle subtended at the center.
Giải thích
The angle between a tangent and a chord is equal to the angle in the alternate segment (alternate segment theorem).