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A-level Maths (pure) > Chapter 7 - Trigonometry and Modelling > Flashcards

Chapter 7 - Trigonometry and Modelling Flashcards

1
Q

Sin(A±B)

A

sinAcosB ± cosAsinB

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2
Q

cos(A±B)

A

cosAcosB ± sinAsinB
(sign is the opposite to in original function)

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3
Q

tan(A+B)

A

(tanA±tanB)/(1±tanAtanB)

sign in denominator is the opposite to in original function

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4
Q

sin2A

A

2sinAcosA

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5
Q

cos2A

A

cos^2A-sin^2A

2cos^2A - 1

1 - 2sin^2A

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6
Q

tan2A

A

2tanA/1-tan^2A

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7
Q
A
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A-level Maths (pure) (7 decks)

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