Submit test d's = 60 yt - 27 , subject to the conditions that Vi A particle moves on a coordinate line with acceleration ds =9 and s = 17 when t= 1. Find the velocity v= dt sp in terms of t and the position s in terms of t. dt ds The velocity v= in terms of t is v=. dt The position s in terms of t is s =

et △ABC be a triangle in S^2 (the two-dimensional sphere). Let the dual point C'∈S^2 of C be defined by the following three conditions:(i) d(C' , A)=π/2(ii) d(C' , B)=π/2(iii) d(C' , C)≤π/2A' and B' are defined analogously. Thus we get a dual triangle △A' B' C'. More precisely, △ABC is a non-degenerate triangle, andit follows (you may assume) that △A' B' C' is too.(question) Are there triangles △ABC in S^2 identical to their own dual △A'B'C'?   I would be very thankful if you could provide some explanation with the steps, thank you in advance.