What is the value of ?
Answer and explanation
Correct answer: D. -√3/2
- Step 1: Reduce to the reference angle and apply the sign of the quadrant: . Answer: -√3/2. Why not the others: √3/2: confuses the reference angle or the quadrant sign. -1/2: uses the value of the complementary function. √2/2: takes the wrong sign or ratio.
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