- A5 cm
- B
- C10 cm
- D20 cm
Step-by-Step Solution
PA = PB, so triangle PAB is isosceles with apex angle 60°. Its base angles are (180° − 60°)/2 = 60° each, so it is equilateral and AB = 10 cm.
Answer: C) 10 cm
Tangents PA and PB to a circle make ∠APB = 60°, and PA = 10 cm. How long is the chord AB?
Class 10Tangent Lengths and IncirclesGeometry
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Tangent Lengths and Incircles practice questions
More Class 10 Tangent Lengths and Incircles practice
Two tangents from P to a circle of radius 4 cm are perpendicular to each other. How far…Two concentric circles have radii 5 cm and 3 cm. Find the length of the chord of the…A chord AB of length 30 cm of the outer of two concentric circles touches the inner…PA and PB are tangents of length 12 cm. A third tangent touches the circle at Q, between…A quadrilateral ABCD circumscribes a circle with AB = 9 cm and CD = 7 cm. What is its…