Find the point (x, y) on the unit circle that corresponds to the real number t.(Round your answer to one decimal place.) 
Definitions:
Polygraphs
Lie detector tests that measure physiological responses to questions in order to infer truthfulness.
Reliability and Validity
Terms used in research and testing to describe, respectively, the consistency of results over time and the accuracy of measuring what it is supposed to measure.
Unstructured Interviews
A type of interview in which questions are not prearranged, allowing for a free-flowing, conversational approach.
Systematic Scoring
A methodical approach to evaluating or assessing elements based on a predetermined set of criteria or standards in a quantifiable manner.
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