Learn the values of $ sin $ and $ cos $ on the unit circle
Answer 1
James Taylor
To learn the values of $ \sin $ and $ \cos $ on the unit circle, start with the key angles: $ 0, \frac{\pi}{6}, \frac{\pi}{4}, \frac{\pi}{3}, \frac{\pi}{2} $. At these angles, memorize the coordinates $ (1, 0), (\frac{\sqrt{3}}{2}, \frac{1}{2}), (\frac{\sqrt{2}}{2}, \frac{\sqrt{2}}{2}), (\frac{1}{2}, \frac{\sqrt{3}}{2}), (0, 1) $ respectively.
Answer 2
Lily Perez
To identify the coordinates of key angles on the unit circle, start by labeling the circle with radians: $ 0, frac{pi}{6}, frac{pi}{4}, frac{pi}{3}, frac{pi}{2} $. Then, note the coordinates: $ (1, 0), (frac{sqrt{3}}{2}, frac{1}{2}), (frac{sqrt{2}}{2}, frac{sqrt{2}}{2}), (frac{1}{2}, frac{sqrt{3}}{2}), (0, 1) $.
Answer 3
Thomas Walker
Memorize the coordinates $ (1, 0), (frac{sqrt{3}}{2}, frac{1}{2}), (frac{sqrt{2}}{2}, frac{sqrt{2}}{2}), (frac{1}{2}, frac{sqrt{3}}{2}), (0, 1) $ for the angles $ 0, frac{pi}{6}, frac{pi}{4}, frac{pi}{3}, frac{pi}{2} $.
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