7 sec(t) Find the derivative of f(t) = 216 df dt Find the derivative of f(2) = - 7 cot(x) csc(X). f' (I) = 2 sin(t) Find the derivative of f(t) = cos(t) - 5 df dt Find the equation of the tangent line to the curve y = 8 sinr at r = 2 Equation of Tangent Line is Let f(x) = 7 sinc. Find each of the following: Find the second derivative, f" (x) = Find the third derivative, f' "'(x) = Find the fourth derivative, f"" "(x) =