Problem 60 of 7
Evaluate trig functions for common angle 5pi/3.
Hints
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use special-angle coordinates.
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Use special-angle coordinates for multiples of pi/6, pi/4, and pi/3.
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Solution
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1. Locate the common angle on the unit circle.
2. Read sine and cosine coordinates.
3. Compute tangent as sine divided by cosine when defined.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Decimal approximations when exact values are requested.