unknownm546 unknownm546

30-12-2020
Mathematics

contestada

find the value of trignometric function:
cos 2pie÷3
cos (-450°) fast please

Respuesta :

ChoiSungHyun ChoiSungHyun

30-12-2020

Step-by-step explanation:

cos2π/3 = -cosπ/3 = -0.5.

cos(-450°) = cos450° = cos90° = 0.

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