Question10. Find the exact value of $\cos I$ in simplest radical form.

Studdy Solution
Substitute the values into the cosine formula:
$$\cos I = \frac{\sqrt{8}}{\sqrt{89}}$$
Simplify the expression if possible. Since both are square roots, this is already in simplest radical form.
The exact value of $\cos I$ in simplest radical form is:
$$\boxed{\frac{\sqrt{8}}{\sqrt{89}}}$$