Question

calculate the length of a tangent from a point 13 cm away from the centre of a radius 5 cm.​

Answer 1

Answer:

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Answer 2

Answer:

Since tangent is perpendicular to the circle [by tangent theorem,]

By Pythagoras theorem

let the distance 13cm be x radius be r and tangent length be t

(x)²=(t)²+(r)²

(13)²=(t)²+(5)²

169-25=(t)²

144=t²

Taking square roots,

t=12cm

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