Chapter 7 Identities Flashcards

1
Q

sinx^2

A

1-cosx^2

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2
Q

1-cosx^2

A

sinx^2

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3
Q

-sinx

A

sin(-x)

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4
Q

cscx^2

A

cotx^2+1

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5
Q

tanx^2+1

A

secx^2

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6
Q

cos(x/2)

A

+- sqrt1+cosx/2

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7
Q

cosx^2

A

1-sinx^2

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8
Q

cot(pi/2-x)

A

tanx

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9
Q

1

A

sinx^2+cosx^2=1

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10
Q

cos(-x)

A

cos

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11
Q

cos(2x)

A

1-2sin^2x

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12
Q

sin(-x)

A

-sinx

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13
Q

sin(pi/2-x)

A

cosx

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14
Q

cotx^2

A

cscx^2-1

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15
Q

tan(pi/2-x)

A

cotx

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16
Q

1-sinx^2

17
Q

cscx^2-1

18
Q

cos(2x)

19
Q

sinx^2+cosx^2

20
Q

tan(2x)

A

2+tanx/1-tan^2x

21
Q

secx^2

22
Q

tan(x/2)

A

1-cosu/sinu

23
Q

csc(pi/2-x)

24
Q

tan(x/2)

A

sinu/1+cosu

25
tanx^2
secx^2-1
26
sin(2x)
2sinx x cosx
27
cotx^2+1
cscx^2
28
sec(pi/2-x)
cscx
29
sec(-x)
secx
30
cos(pi/2-x)
sinx
31
sin(x/2)
+- sqrt1-cosx/2
32
cos(2x)
cos^2x-sin^2x