Question 1190284
.


Regarding your first question/problem/theorem,  see the lesson


&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Circles/The-longer-is-the-chord-the-larger-its-central-angle-is.lesson>The longer is the chord the larger its central angle is</A>


in this site.




Regarding your second question/problem/theorem, &nbsp;see the lesson


&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Circles/Tangent-segments-to-a-circle-from-a-point-outside-the-circle.lesson>Tangent segments to a circle from a point outside the circle</A> 


in this site &nbsp;(Theorem &nbsp;1).