Final answer:
Without a figure or more context, it is impossible to conclusively answer the student's question. However, concepts related to Brewster's angle, vector properties, and triangle geometry are addressed and discussed with respect to known physical and mathematical laws.
Step-by-step explanation:
To determine which statement is true based on the given information, we would need to see a figure or have a more detailed description of the conditions stated. Without this, we cannot ascertain definitively whether statements such as ZIAK is a right angle or OB is the midpoint of IR are true. Similarly, we cannot tell if OBK = AK or if OB is perpendicular to IB without additional information on the geometry or special properties of the figures involved.
However, based on the other provided information regarding vector addition, Brewster's angle, and properties of triangles and vectors, we can discuss those concepts. For example, we know from physics that Brewster's angle is related to the polarization of light, and it sums to 90 degrees when combined with its counterpart from the other side of the interface. We can also confirm that the Pythagorean theorem applies to vectors at right angles to calculate resultant vector length. Furthermore, we understand that triangle sides and angles have specific properties, such as the sum of internal angles amounting to 180 degrees.