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alexandr402 [8]
4 years ago
8

How to find the value of cos (-1380°)

Mathematics
1 answer:
ololo11 [35]4 years ago
4 0
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
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