Things to remember math Flashcards by Shareed Mishra | Brainscape

Q

cos@

A

x/r

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Q

sinx

A

y on the unit circle

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Q

tanx

A

sinx/cosx

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Q

secx

A

1/cosx

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Q

cscx

A

1/sinx

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Q

cos2x

A

1-2sin^x

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Q

sin2x

A

2sinxcosx

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Q

cos^2@+sin^2@

A

1

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Q

cos^2@

A

1-sin^2@

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Q

sin^2@

A

1–cos^2@

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Q

cos2x-cosx

A

2cos^2x-1

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Q

rsin@

A

y=rsin@

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Q

rcos@

A

x=rcos@

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Q

x/r

A

cos@

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Q

x^2+y^2=

A

x^2+y^2=r^2

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Q

tan🥧/2

A

Undefined

Q

tan🥧/4

A

1

Q

cot🥧/3

A

rad3/3

Q

tan🥧/6

A

rad3/3

Q

csc🥧/3

A

2rad3/3

Q

sec🥧/4

A

rad2