Determine the value of $cos(frac{pi}{4})$ using the unit circle
Answer 1
Chloe Evans
To determine the value of $\cos(\frac{\pi}{4})$, we use the unit circle. At the angle $\frac{\pi}{4}$, the coordinates on the unit circle are $(\frac{\sqrt{2}}{2}, \frac{\sqrt{2}}{2})$.
Since the x-coordinate represents the cosine value, we have:
$ \cos(\frac{\pi}{4}) = \frac{\sqrt{2}}{2} $
Answer 2
Benjamin Clark
To find $cos(frac{pi}{4})$ using the unit circle:
At the angle $frac{pi}{4}$, the coordinate is $(frac{sqrt{2}}{2}, frac{sqrt{2}}{2})$.
Thus,
$ cos(frac{pi}{4}) = frac{sqrt{2}}{2} $
Answer 3
Isabella Walker
For $cos(frac{pi}{4})$, the unit circle gives:
$ cos(frac{pi}{4}) = frac{sqrt{2}}{2} $
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