Evaluate the sine and cosine of $ frac{pi}{4} $
Answer 1
Joseph Robinson
To evaluate the sine and cosine of $ \frac{\pi}{4} $, we use the unit circle values:
The sine of $ \frac{\pi}{4} $ is:
$ \sin \left( \frac{\pi}{4} \right) = \frac{\sqrt{2}}{2} $
The cosine of $ \frac{\pi}{4} $ is:
$ \cos \left( \frac{\pi}{4} \right) = \frac{\sqrt{2}}{2} $
Answer 2
Maria Rodriguez
Using the unit circle, we find:
$ sin left( frac{pi}{4}
ight) = frac{sqrt{2}}{2} $
$ cos left( frac{pi}{4}
ight) = frac{sqrt{2}}{2} $
Answer 3
Charlotte Davis
On the unit circle:
$ sin left( frac{pi}{4}
ight) = frac{sqrt{2}}{2} $
$ cos left( frac{pi}{4}
ight) = frac{sqrt{2}}{2} $
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