Please help me solve more detail for this problem, I dont understand how to solve it

Guess the value of the limit (if it exists) by evaluating the function at the given numbers. (It is suggested that you report answers accurate to at least six decimal places.) Let f(a) = - tan(2x) - tan(92) + 7x We want to find the limit lim tan(2x) - tan(9x) + 7x 23 Start by calculating the values of the function for the inputs listed in this table. f (2) 0.2 0. 1 0.05 0.01 0.001 0.0001 tan (2x) - tan(92) + 7a Based on the values in this table, it appears lim 23