Question

AB is a tangent= 8 cm and OA is radius=6 cm. Find the distance OB

Answer 1

Answer:

10 cm

Step-by-step explanation:

As tangent is perpendicular to radius

so by applying Pythagoras theorem ,

OB=10 cm

Answer 2

Answer:

10cm.

Step-by-step explanation:

here,ΔAOB is right angled,as the tangent is always perpendicular to the radius.So, byapplying pythagorus theorem,

$(OB)^{2}=(OA)^{2}+(AB)^{2}$

           =$(6)^{2}+(8)^{2}$

           =36+64

 $(OB)^{2}$ =100.

 OB=10cm.