Find the value of Cos 1140°
Answers
Answered by
26
Step-by-step explanation:
cos1140= cos(180×6+60)
=cos60=1/2
Answered by
33
Answer:
Step-by-step explanation:
Cos 1140:
1140×π/180=19π/3
This can be split as:
Cos(6π+π/3)
Cosπ/3= 1/2
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