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A point P is at a distance of 29 cm from the centre of a circl

Question

A point $P$ is at a distance of $29$ cm from the centre of a circle of radius $20$ cm. Find the length of the tangent drawn from $P$ to the circle.

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A point

P

is at a distance of

29

cm from the centre of a circle of radius

20

cm. Find the length of the tangent drawn from

P

to the circle.

7 mins ago

Discuss this question LIVE

7 mins ago

Text solutionVerified

O P^{2} = Q P^{2} + Q O^{2}

(29)^{2} = Q P^{2} + (20)^{2}

Q P^{2} = 841 - 400

Q P^{2} = 441

QP = 21 c m

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Question Text	A point $P$ is at a distance of $29$ cm from the centre of a circle of radius $20$ cm. Find the length of the tangent drawn from $P$ to the circle.
Answer Type	Text solution:1
Upvotes	150