7 Flashcards

1
Q

Sec(x) =

A

1/Cos(x)

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2
Q

Csc(x) =

A

1/Sin(x)

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3
Q

Tan(x) =

A

Sin(x)/Cos(x)

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4
Q

Cot(x) =

A

1/Tan(x)

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5
Q

Sin^2(x) + Cos^2(x) =

A

1

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6
Q

1 + tan^2(x) =

A

sec^2(x)

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7
Q

1 + cot^2(x) =

A

csc^2(x)

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7
Q

sin(-x) =

A

-sin(x)

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8
Q

cos(-x) =

A

cos(x)

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9
Q

tan(-x) =

A

-tan(x)

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10
Q

sin(x+y) =

A

sin(x)cos(y) + cos(x)sin(y)

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11
Q

sin(x-y) =

A

sin(x)cos(y) - cos(x)sin(y)

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12
Q

cos(x+y) =

A

cos(x)cos(y) - sin(x)sin(y)

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13
Q

cos(x-y) =

A

cos(x)cos(y) + sin(x)sin(y)

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14
Q

sin(2x) =

A

2cos(x)sin(x)

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15
Q

cos(2x) =

A

cos^2(x) - sin^2(x) = 2cos^2(x) - 1 = 1 - 2sin^2(x)

16
Q

sin^2 =

A

(1 - cos(2x))/2

17
Q

cos^2(x) =

A

(1 + cos(2x))/2

18
Q

sin(u/2) =

A

+- sqrt((1 - cos(u))/2)

19
Q

cos(u/2) =

A

+- sqrt((1 + cos(u))/2)

20
Q

sin(u)cos(v) =

A

1/2[sin(u + v) + sin(u - v)]

21
Q

cos(u)sin(v) =

A

1/2[sin(u + v) - sin(u - v)]

22
Q

cos(u)cos(v) =

A

1/2[cos(u + v) + cos(u - v)]

23
Q

sin(u)sin(v) =

A

1/2[cos(u - v) - cos(u + v)]