Verify the given linear approximation at

Question

a = 0.
Then determine the values of x for which the linear approximation is accurate to within 0.1. (Enter your answer using interval notation. Round your answer to two decimal places.)
tan x ≈ x

Answer 1

series for f(x when a = 0:
tan x = tan 0 + sec^2 0 (x) + ....
= 0 + 1 x .....
when does
x = tan x +/- .1
make a table of x in radians vs tan x

Answer 2

(-0.63, 0.63) - final answer