basic unit circle
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13 Terms
1
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\cos\frac{n\pi}{6}=
\pm\frac{\sqrt3}{2}
2
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\cos\frac{n\pi}{4}=
\pm\frac{\sqrt2}{2}
3
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\cos\frac{n\pi}{3}=
\pm\frac12
4
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\sin\frac{n\pi}{6}=
\pm\frac12
5
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\sin\frac{n\pi}{4}=
\pm\frac{\sqrt2}{2}
6
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\sin\frac{n\pi}{3}=
\pm\frac{\sqrt3}{2}
7
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\tan\frac{n\pi}{6}=
\pm\frac{\sqrt3}{3}
8
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\tan\frac{n\pi}{4}=
\pm1
9
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\tan\frac{n\pi}{3}=
\pm\sqrt3
10
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Quadrant 1
\frac{\pi}{3},\frac{\pi}{4},\frac{\pi}{6}\to+\cos x,+\sin x,_{}+\tan x
11
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Quadrant 2
\frac{2\pi}{3},\frac{3\pi}{4},\frac{5\pi}{6}\to-\cos x,+\sin x,-\tan x
12
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Quadrant 3
\frac{7\pi}{6},\frac{5\pi}{4},\frac{4\pi}{3}\to-\cos x,-\sin x,+\tan x
13
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Quadrant 4
\frac{5\pi}{3},\frac{7\pi}{4},\frac{11\pi}{6}\to+\cos x,-\sin x,-\tan x