Cosine of 210°
Calculate cosine of 210 degrees using the unit circle.
Answer:
cos(210°) = -0.866025
Step-by-Step Solution
Step 1
Identify
Finding cos(210°)
Step 2
Convert to Radians
210° = 3.665191 rad
Step 3
Calculate
cos(210°) = -0.866025
Step 4
Final Answer
-0.866025