In the figure, tu is tangent to the circle at point u. use the figure to answer the questions.
(a) describe the relationship among the lengths of the segments formed by the secant, rt, and the tangent segment, tu. you may used words and/or an equation.
(b) suppose rt = 9 in. and st = 4 in. is it possible to find the length of tu? if so, show how to find the length. if not, explain why not.
in advance. i appreciate the . i'm still not that good at questions like this one.