Evaluate Cos 210° Plzzz
Answers
Answered by
3
Answer:
Cos 210° = Cos (180°+30°)
= - Cos 30° = - √3/2.
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Answered by
0
Answer:
Yes
Explanation:
cos 210° = ( 180° + 30° )
= - cos 30°
= √3 / 2
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