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How to find the value of cos (-1380°)
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How to find the value of
cos (-1380°)

How to find the value of cos (-1380°)-example-1
User Roy K
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1 Answer

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Divide -1380 by 360 gives -3.83333333

360 * -3.8333333 = -300

That is equivalent to 60 degrees

cos 60 = 1/2

Answer is 1/2
User Crackertastic
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