CBSE Class 10 Maths (Basic) 2025 · Paper 430/6/1 · Question 33(b)

Circles 5 marks Hard

P A

and

P B

are tangents drawn to a circle with centre

O

. If

∠ A O B = 12 0^{\circ}

and

O A = 10

cm, then

Tangents PA, PB from external point P

Answer

(i)

∠ O P A = 3 0^{\circ}

; (ii) Perimeter of

△ O A P = (30 + 103)

\approx 47.32

cm; (iii)

A B = 103

\approx 17.32

cm.

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