Two tangents AP and AQ are drawn to a circle with centre O from an external point A, where P and Q are points on the circle. If AP = 12 cm and ∠PAQ = 60°, then the length of chord PQ is:

Answer: Option A

Solution

Answer: Option A

Solution:

In ΔAPO

2 unit → 12
1 unit → 6
PT = 6
PQ = 2 × PT = 2 × 6 = 12 cm