(Solved): The lim h0 (A) 0 tan 3(x+h)-tan 3.x h 18 (B) 3sec(3x) (C) sec (3x) (D) 3 cot(3x) (E) nonexi ...

The lim h?0 (A) 0 tan 3(x+h)-tan 3.x h 18 (B) 3sec²(3x) (C) sec² (3x) (D) 3 cot(3x) (E) nonexistent ? An equation of the line tangent to the graph of y = cos(2x) at x = = is 4 (A) y-1--| x- - 1) (B) y-1-2 x- (C) y=2(x-7) x = -(x-7) (D) y (E) y=-2(x-7) 4