Pure Flashcards by Yseult Howcutt

Q

sin^2x + cos^2x

A

1

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Q

tanx

A

sinx/cosx

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Q

1 + cot^2x

A

cosex^2x

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Q

tan^2x + 1

A

sec^2x

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Q

cotx

A

1/tanx or cosx/sinx

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Q

cosecx

A

1/sinx

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Q

secx

A

1/cosx

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Q

sin2x

A

2sinxcosx

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Q

cos2x

A

cos^2x - sin^2x
2cos^2x - 1
1 - 2sin^2x

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Q

tan2x

A

2tanx/1-tan^2x

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