1. The problem statement, all variables and given/known data The problem is described in the picture I've attached. It is problem number 6. 2. Relevant equations Tangent line of a curve Length of a curve 3. The attempt at a solution I don't know why I'm so confused on what seems like it should be a relatively straightforward problem, but I am. I guess I would approach this problem by finding the tangent line at a point (say t=0) (though I forget the procedure to do that exactly) and then basically just show that the tangent line has length 1 from y = 0 basically? - Also would I just like subtract the two points (i.e., the point on the curve where there is a tangent line and then the y axis (y = 0)) or would it require the use of the formula for length namely the integral of the absolute value of the derivative of γ(t) from the y axis to the point on the curve? Any help with this would be greatly appreciated!