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15. [-/0.69 Points] DETAILS SCALCET9 13.2.032. Find parametric equations for the tangent line to the curve with the given parametric equations at the specified point. x = 10 cos(t), y = 10 sin(t), z = 4 cos(2t), (5V3, 5, 2) (x(t), y(t), z(t) ) =16. [-/0.69 Points] DETAILS SCALCET9 13.3.049. The curvature of a plane parametric curve x = A(t), y = g(t) is given by Ixy - yxI K = [ * 2 + $ 21 3/2 , where dots indicate derivatives with respect to t. Find the curvature of the following curve. x = Be'cos(t), y = Be' sin(t) K(t ) =17. [-/0.69 Points] DETAILS SCALCET9 13.XP.2.022. Evaluate the integral. (Use C for the constant of integration.) cos(4nt) i + sin(2nt) j + +2k) at18. [-/0.77 Points] DETAILS SCALCET9 13.4.025.MI. A ball is thrown at an angle of 450 to the ground. If the ball lands 88 m away, what was the initial speed of the ball? (Round your answer to the nearest whole number. Use g x 9.8 m/s-.) VO= m/s