Two tangents PA and PB are drawn from an external point P to a circle with centre O at the points A and B respectively on it, such that ∠APB = 120° and AP = 12.5 cm. The length of OP is:

Answer: Option B

Solution

Answer: Option B

Solution:

∠APO = 60°
∠POA = 30°

1 unit → 12.5
2 unit → 12.5 × 2 = 25
PO = 25 cm