Question

from and external point T, tangent PT is drawn to a circle whose center is O.if OT=29 cm and PT=21 cm, determine the radius of the circle

Answer 1

Answer:if OT =29 cm

And PT =21 cm

OP= ?

We know that tangent at any point of a circle os prependicular to the radius through the point of contact .

<opt=90•

By pythagoras theorem,

Op2= ot2-pt2

= (29)2-(21)2

= 841-441

= 400

Op= 20cm.

Radius of the circle is 20 cm

Step-by-step explanation: