Final Flashcards

0
Q

π/4

A

45 degrees

π/4, 3π/4, 5π/4, 7π/4

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1
Q

π/3

A

60 degrees

π/3, 2π/3, 4π/3, 5π/3

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2
Q

π/6

A

30 degrees

π/6, 5π/6, 7π/6, 11π/6

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3
Q

Sin(π/2-Θ)=

A

CosΘ

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4
Q

Cos(π/2-Θ)=

A

Sin

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5
Q

Tan(π/2-Θ)=

A

Cot

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6
Q

Cot(π/2-Θ)=

A

Tan

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7
Q

Sec(π/2-Θ)=

A

Csc

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8
Q

Csc(π/2-Θ)=

A

Sec

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9
Q

Sin^2Θ + cos^2Θ=

A

1

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10
Q

1=

A

Sec^2Θ - Tan^2Θ

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11
Q

Csc^2Θ - Cot^2Θ=

A

1

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12
Q

Sin(-u)=

A

-sin u

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13
Q

Cos(-u)=

A

Cos u

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14
Q

Tan(-u)=

A

-tan u

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15
Q

Sin(u+-v)

A

SinuCosv +- CosuSinv

16
Q

Cos(u+-v)

A

CosuCosv -+ SinuSinv

17
Q

Tan(u+-v)

A

Tanu +- Tanv/ 1 -+ TanuTanv

18
Q

Sin2u

A

2SinuCosu

19
Q

Tan2u

A

2Tanu/ 1-Tan^2 u

20
Q

Cos2u

A

Cos^2u -Sin^2u
2cos^2u-1
1-2sin^2u

21
Q

A=

A

1/2bcSinA

22
Q

SSA

A

SinA/a = SinB/b = SinC/c

23
Q

Law of Cosines

A

a^2= b^2 + c^2 -2bcCosA

24
Q

Herons area

A

Square root of s(s-a)(s-b)(s-c)

25
Q

u+v for vector length

A

(u1+v1, u2+v2)

26
Q

An

A

A1 + (n-1)d

27
Q

Sn

A

N/2(a1+an)

28
Q

An

A

A1r^n-1

29
Q

Sn

A

A1(1-rn)/(1-r)

30
Q

S infinity

A

A1/1-r

31
Q

P–>R

A

X=rCosΘ

Y=rSinΘ

32
Q

R–>P

A

TanΘ=y/x

R^2= x^2 + y^2