Need help with questions 7-8-9. Reference will post below. Be more specific if possible.

192 I limea I , by the Sqme CHAPTER FIGURE 2 RULES We a to IN-ove 2 _ first that a of a circle with O, central angle g. I BC is drawn 04. By dehniticm of From di agrm IBCI < sin 9 < Let at A B at E of a circle is of a IAEI + IEBI. IEBI < IAEI+IEDI = IADI We km lim Figme 2(b) Out But the (sin is have prmed 2. We of its right left limits g limit in (l) 1+1