How would I go about answering these two trigonometry questions?

At which of the following values of x is there a point of inflection for the function f(x) = tan x? ( a) x = 1 O b) x = 3 TT 4 O ch x = 7 O d) x = ? u/ T'(X) = 3 cos (2x) Question 13 (1 point) Listen D A 2 m tall woman is running at a rate of 2 m/s when she spots a bird in a tree 6 m off of the ground. How fast is the angle of elevation to the bird increasing when she is 3 m from the base of the tree? O a) 0.32 rad/s O b) 0.16 rad/s O c) 0.5 rad/s O d) 0.64 rad/s