Question

calculate the length of a tangent from a point 25 CM away from the centre of a circle of radius 7 cm​

Answer 1

Answer:24cm

Step-by-step explanation: we know tangent is perpendicular to radius. Hence it will form a right angled Triangle with radius and line joining tangent's end point(OA).

Using Pythagoras theorem,

Tangent^2 + radius^2 = OA^2

TANGENT= √(25)^2 -7^2)

√625-49

=√576

=24CM

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