Memory quiz identities Flashcards by Ashley Miller | Brainscape

Q

secx

A

1/cosx

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Q

cscx

A

1/sinx

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Q

cotx

A

1/tanx

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Q

tanx

A

sinx/cosx

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Q

quotient identities- cotx

A

cosx/sinx

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Q

pythagorean identity

A

sin2x+cos2x=1

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Q

sin2x

A

1-cos2x

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Q

cos2x

A

1-sin2x

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Q

sec2x

A

tan2x+1

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Q

csc2x

A

cot2x+1

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Q

sin(-x)

A

-sinx

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Q

cos(-x)

A

cosx

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Q

tan(-x)

A

-tanx

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Q

sin(A+/-B)

A

sinAcosB+/-cosAsinB

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Q

cos(A+/-B)

A

cosAcosB+/-sinAsinB

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Q

tan(A+/-B)

A

tanA+/- tanB/1+/-tanAtanB

Q

sin(2A)

A

2sinAcosA

Q

cos(2A)

A

cos^2A-sin^2A

Q

cos^2A

A

1+cos(2A)/2

Q

sin^2A

A

1-cos(2A)/2

Q

cos(x/2)

A

+/- square root 1+cosx/2

Q

sin(x/2)

A

+/- square root 1-cosx/2

Q

30 degrees

A

pi/6

Q

45 degrees

A

pi/4

Q

60 degrees

A

pi/3

Q

90 degrees

A

pi/2

Q

120 degrees

A

2pi/3

Q

135 degrees

A

3pi/4

Q

150 degrees

A

5pi/6

Q

180 degrees

A

pi

Q

210 degrees

A

7pi/6

Q

225 degrees

A

5pi/4

Q

240 degrees

A

4pi/3

Q

270 degrees

A

3pi/2

Q

300 degrees

A

5pi/3

Q

315 degrees

A

7pi/4

Q

330 degrees

A

11pi/6

Q

360 degrees

A

2pi