A circle with a radius of 10 cm, and a chord makes a 60° angle at the center. What is the length of that chord?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 10 cm.
Radius R = 10 cm
Central angle θ = 60°.
Chord length = 2R sin(θ/2) = 2 × 10 × sin 30° = 20 × 0.5 = 10 cm