Trig equations Flashcards

1
Q

sec(x) =

A

1 / cos(x)

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2
Q

cosec(x) =

A

1 / sin(x)

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3
Q

cot(x) =

A

1 / tan(x)
OR
cos(x) / sin(x)

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4
Q

sec² (x) =

A

1 + tan² (x)

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5
Q

cosec² (x) =

A

1 + cot² (x)

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6
Q

sin2A =

A

2sinAcosA

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7
Q

cos2A =

A

cos² A - sin² A
2cos²A - 1
1 - 2sin²A

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8
Q

tan2A =

A

2tanA / 1-tan²A

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9
Q

tan(A+B) =

A

tan(A)+tan(B) / 1 - tan(A)tan(B)

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