Mathematics for IGCSE & O level - Circle Theorems (Section 1 - No. 32)
Which geometric relationships are involved when determining the angles in a diagram with a circle and a tangent?
The angle between the tangent and the radius.
The alternate segment theorem.
The angle in the same segment.
The angle at the centre is twice the angle at the circumference.
Giải thích
The angle between the tangent and radius and alternate segment theorem are applicable.