SOLUTION: Express cos 230 as a function of an acute angle

SOLUTION: Express cos 230 as a function of an acute angle

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Question 971834: Express cos 230 as a function of an acute angle
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
cos (230)=-(cos (50) =-0.643
Cosine is negative in the second and third quadrants.
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