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Finding the lenght of an Arc on a graph

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Length of an Arc This Photo by Unknown Author is licensed under CC BY-SA   What is an Arc? -           A non linear line plotted on a graph (shown in the picture is the plot of y=x 2 ) -           A segment of a cicles circumference This post will deal with the first definition and will play a crucial rule in explaining the second post How to find the length of a line? Rule: no rulers allowed With no rulers allowed, you would be scratching you head. However maths has its knight in Shining Armour to reveal. (Drum roll…) The pythagoras Theorem Symbols: x - Horizontal length y - Vertical length Expressions needed:  C 2 =A 2 + B 2 For any equation the gradie...