Find the value of cos( -660°)
Answers
Answered by
1
Answer:
Step-by-step explanation:
cos (-660°)
=cos660 ( as cos(-x)=cosx )
=cos (3π +120)
=cos120
=cos(90+30)
=sin 30
=1/2
Similar questions
Biology,
2 months ago
Computer Science,
2 months ago
Hindi,
2 months ago
Geography,
4 months ago
Hindi,
11 months ago
Computer Science,
11 months ago
Math,
11 months ago