Precalc Final

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Last updated 1:06 PM on 5/29/26
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9 Terms

1
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Pythagorean identities

  1. Sin²θ + cos²θ = 1

  2. 1 + tan²θ = sec²θ

  3. 1 + cot²θ = csc²θ

2
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Reciprocal Identities

  1. 1/tan = cot

  2. 1/sin = csc

  3. 1/cos = sec

3
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Quotient ID

  1. tan = sin/cos

  2. cot = cos/sin

4
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Law of sines

SinA/a = SinB/b = SinC/c

  • AAS, SSA (ambiguous), ASA

5
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Law of cosines

a² = b² + c² - 2(b)(c) cosA

  • SSA, SAS

6
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Heron’s area

  • s = a+b+c/2

  • A = root (s(s-a)(s-b)(s-c)

7
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Sines area

A = ½ (b)(c) sinA

8
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Angular velocity (w)

W = theta / time

9
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Linear velocity (v)

V = rw