Core 3: Trig Identities Flashcards by Kirsten Crowther | Brainscape

Q

SecA

A

1/CosA

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Q

CosecA

A

1/CosecA

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Q

CotA

A

1/TanA

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Q

TanA

A

SinA/CosA

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Q

1

A

Sin²Α + Cos²A

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Q

Cosec²A

A

1+Cot²A

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Q

Sec²Α

A

Tan²A+1

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Q

Sin(A+B)

A

sinAcosB + sinBcosA

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Q

Sin(A-B)

A

sinAcosB - sinBcosA

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Q

Cos(A+B)

A

cosAcosB - sinAsinB

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Q

cos(A-B)

A

cosAcosB + sinAsinB

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Q

Tan(A+B)

A

1- tanAtanB

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Q

tan(A-B)

A

1+tanAtanB

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Q

Sin2A

A

2sinAcosA

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Q

Cos2A

A

cos²A - sin²A
1- 2sin²A
2cos²A -1

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Q

Tan2A

A

1-tan²A