Question

What must be the length of ZY in order for ZY to be tangent to circle x at point y

Answer 1

Answer:

when we draw diagram we get right angled triangle with y=90°

by Pythagoras theorem,

ZY^2=(XZ^2)-(XY^2)

so,

ZY=√(XZ^2)-(XY^2)

Hope this helps u

Answer 2

Answer:

when we draw diagram we get right angled triangle with y=90°

by Pythagoras theorem,

ZY^2=(XZ^2)-(XY^2)

so,

ZY=√(XZ^2)-(XY^2)

Hope This Helps U