Cosine, sine and tangent of π/6 and π/3
With the unit circle and the Pythagorean theorem, we can find the exact sine, cosine, and tangent of the angles π/6 and π/3.
Видео Cosine, sine and tangent of π/6 and π/3 канала Khan Academy
Видео Cosine, sine and tangent of π/6 and π/3 канала Khan Academy
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