vickye146
28.09.2019 •
Mathematics
Which expression is equivalent to cos120°?
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Ответ:
Option 1 - cos 240°
Step-by-step explanation:
Ответ:
For this case we have by definition, that the area of a circle is given by:
Where:
A: It is the area of the circle
r: It is the radius of the circle
We cleared the radius of the circle:
We choose the positive value: