Calculate $ cos(frac{pi}{4}) $ using the unit circle
Answer 1
Sophia Williams
To calculate $ \cos(\frac{\pi}{4}) $ using the unit circle, we look at the angle $ \frac{\pi}{4} $ on the unit circle.
At this angle, both sine and cosine values are equal.
Thus, the value of $ \cos(\frac{\pi}{4}) $ is:
$ \cos(\frac{\pi}{4}) = \frac{\sqrt{2}}{2} $
Answer 2
Abigail Nelson
To determine $ cos(frac{pi}{4}) $ using the unit circle, note that $ frac{pi}{4} $ is a 45-degree angle.
The cosine and sine of this angle are the same.
The value of $ cos(frac{pi}{4}) $ is:
$ cos(frac{pi}{4}) = frac{sqrt{2}}{2} $
Answer 3
Daniel Carter
Using the unit circle, $ cos(frac{pi}{4}) $:
$ cos(frac{pi}{4}) = frac{sqrt{2}}{2} $
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