Final answer:
To find the value of sec(A) - atan(A), calculate the values of sec(A) and atan(A), and then subtract them. The correct answer is 8.
Step-by-step explanation:
To find the value of sec(A) - atan(A), we first need to understand the definitions of sec(A) and atan(A).
sec(A) is the reciprocal of the cosine function and can be calculated as 1/cos(A). atan(A) is the inverse tangent function and can be found using a calculator or trigonometric tables.
Once we have the values of sec(A) and atan(A), we can subtract them to find the final answer.
Let's calculate:
sec(A) - atan(A) = 9 - 1 = 8
So, the correct option is (d) 8.