Final answer:
The exact value of sec θ in simplest radical form is 25/7.
Step-by-step explanation:
To find the exact value of sec θ in simplest radical form, we need to determine the cosine of θ.
Since the terminal side of θ passes through the point (-7,24), we can calculate the hypotenuse of the right triangle formed by the coordinates as √((-7)^2 + 24^2) = 25.
Using the Pythagorean theorem, we can find the adjacent side as 7. Hence, cos θ = adjacent/hypotenuse = 7/25.
Now, sec θ is the reciprocal of cos θ. So, sec θ = 1/cos θ = 1/(7/25) = 25/7.