2015 · Q91
If the angle between the radii of a circle is 130°, then the angle between the tangents at the ends of the radii is
Elementary MathematicsCircles
- A90°
- B70°
- C50°
- D40°
Explanation
The angle between each tangent and its radius is 90°, so the angle between the tangents is 180° − 130° = 50° (option C).