Trigo Flashcards

(12 cards)

1
Q

Cos ( x + k x 2#) = ?

A

= cos (x)

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2
Q

Sin ( x + k x 2#) = ?

A

= sin(x)

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3
Q

Cos(-x)

A

Cos(x)

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4
Q

Sin(-x)

A

-sin(x)

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5
Q

Cos(pi - x)

A

-cos(x)

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6
Q

Sin( pi - x)

A

Sin (x)

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7
Q

Cos (pi + x)

A

-Cos (x)

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8
Q

Sin(pi+x)

A
  • sin (x)
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9
Q

Périodicité de sin et cos

A

Sin et cos sont 2pi périodique
Sin( x + 2pi)= sin (x)
Cos (x+ 2pi) = cos (x)

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10
Q

Parité des fonctions sin et cos

A

Cos est paire
Cos(-x)= cos(x)
Sin est impaire
Sin (-x) = -sin (x)

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11
Q

Dérivées de cos et sin

A

Sin’ (x) = cos (x)
Cos’ (x) = - sin(x)

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12
Q

Courbe de cos et sin

A

Par parité cos est symétrique par rapport à l’axe des ordonnées
Par imparité sin est symétrique par rapport à l’origine du repère

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