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If sin x = -1/2, and 270° < x < 360°, what is cos(x - 30°)?

1 Answer

5 votes

Answer:

x = -30

cos(x - 30) = ½

Explanation:

Look at the picture

If sin x = -1/2, and 270° < x < 360°, what is cos(x - 30°)?-example-1
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