Question

IF PA= 10 and BE = 21 find BP

Answer 1

the question is not clear. attach an image to go with it.

Answer 2

If PA is 10 and BE is 21 then what is BP

Answer 3

if BE = 21, then the radius is 21/2
say the center of the circle is Z then
AZ^2+PA^2 = PZ^2
find PC
then PB = PZ+ZB
ZB is the radius

Answer 4

this is possible because the tangent to a circle is perpendicular to the line joining the tangent and the center of the circle. so we use the pythagoras theorem