PHASE 1: THE MUST-HAVES (LIMITS & TRIG)
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Last updated 5:44 PM on 4/4/26
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8 Terms
1
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Special Limit 1
\lim_{x \to 0} \frac{\sin x}{x} = 1
2
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Special Limit 2
\lim_{x \to 0} \frac{1 - \cos x}{x} = 0
3
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tan(x) Identity
\tan(x) = \frac{\sin(x)}{\cos(x)}
4
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sec(x) Identity
\sec(x) = \frac{1}{\cos(x)}
5
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csc(x) Identity
\csc(x) = \frac{1}{\sin(x)}
6
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cot(x) Identity
\cot(x) = \frac{\cos(x)}{\sin(x)}
7
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Pythagorean Identity
\sin^2(x) + \cos^2(x) = 1
8
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Double Angle Sine
\sin(2x) = 2\sin(x)\cos(x)
