Question

class 10 do solve the question fast find cd​

Answer 1

Answer:

Step-by-step explanation:

Assuming AD and CD are tangent to the Circle O

Meaning that angle OAD = 90 degree

From the Pythagorus' Theorem : OD ^2 = 100 + AD ^2

We also know that AB = AC (Due to BOA = BOC, OA = OC and AOB = COB)

So we can know that OB = 8 due to the Pythagorus' Theorem

Looking at Triangle ABD : AD ^2 = BD^2 + 36

##(OB + BD) ^2 = 100 + BD ^2 + 36

64 + 16 * BD + BD ^2 = 136 + BD ^2

16 * BD = 72

BD = 4.5

## AD = 7.5

But since AD and CD are the tangents or the circle O ## AD = CD

##CD = 7.5 ANS