Final answer:
To find the approximate value of θ when given cos(θ), use the inverse cosine function or a trigonometric table. None of the given options match a recognizable value, so the exact value of θ cannot be determined using those options.
Step-by-step explanation:
The approximate value of θ can be determined by finding the inverse cosine of the given value. In this case, we are given the value of cos(θ) and need to find θ. To find the angle whose cosine is equal to the given value, we can use a calculator or trigonometric table to find the inverse cosine.
Looking at the options given, we can see that none of them are values we can directly recognize as the inverse cosine of a known angle. Therefore, we cannot determine the exact value of θ using the given options. It is possible that the actual value of θ lies between two of the given values, but without more information, we cannot determine the exact value.