Trigonometry Flashcards

1
Q

sin(A+B)

A

sinA cosB + cosA sinB

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2
Q

sin(A-B)

A

sinA cosB - cosA sinB

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3
Q

cos(A+B)

A

cosA cosB - sinA sinB

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4
Q

cos(A-B)

A

cosA cosB + sinA sinB

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5
Q

tan(A+B)

A

(tanA + tanB) / (1 - tanA tanB)

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6
Q

tan(A-B)

A

(tanA - tanB) / (1 + tanA tanB)

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7
Q

sin 30º

A

1/2

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8
Q

sin 45º

A

√2 / 2

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9
Q

sin 60º

A

√3 / 2

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10
Q

sin 90º

A

1

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11
Q

sin 0

A

0

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12
Q

cos 0

A

1

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13
Q

cos 30º

A

√3 / 2

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14
Q

cos 45º

A

√2 / 2

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15
Q

cos 60º

A

1/2

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16
Q

cos 90º

A

0

17
Q

tan 0º

A

0

18
Q

tan 30º

A

1 / √3

19
Q

tan 45º

A

1

20
Q

tan 60º

A

√3

21
Q

tan 90º

A

Not Defined

22
Q

cos 180º

A

-1