bambinoo
bambinoo
19-02-2018
Mathematics
contestada
How to find the value of
cos (-1380°)
Respuesta :
Аноним
Аноним
19-02-2018
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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