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25655901
IDENTIDADES TRIGONOMETRICAS
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Hecho por: Maria Jose Palacios 10º
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maria jose palacios osorio
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maria jose palacios osorio
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IDENTIDADES TRIGONOMETRICAS
Identidades Basicas
senθ∙cscθ=1
senθ=1/cscθ
cscθ=1/senθ
tanθ∙cotθ=1
tanθ=1/cotθ
cotθ=1/tanθ
cosθ∙secθ=1
cosθ=1/secθ
secθ=1/cosθ
tanθ=senθ/cosθ
cotθ=cosθ/senθ
Suma y Resta de angulos
sen(α±β)=senα∙cosβ±senβ∙cosα
cos(α±β)=cosa∙cosβ±senα∙senβ
tan(α±β)=(tanα±tanβ)/(1±tanα∙tanβ)
Identidades Pitagoricas
〖sen〗^2 θ∙〖cos〗^2 θ=1
〖sen〗^2 θ=1-〖cos〗^2 θ
senθ=±√(1-〖sen〗^2 θ)
〖cos〗^2 θ=〖1-sen〗^2 θ
cosθ=±√(1-〖sen〗^2 θ)
〖tan〗^2 θ+1=〖sec〗^2 θ
〖tan〗^2 θ=〖sec〗^2 θ-1
1+〖cot〗^2 θ=〖csc〗^2 θ
〖cot〗^2 θ=〖cot〗^2 θ-1
Formulas, Angulos dobles
sen(2θ)=2∙senθ∙cosθ
cos(2θ)=
〖cos〗^2 θ〖-sen〗^2 θ
1-2〖sen〗^2 θ
2〖cos〗^2 θ-1
tan(2θ)=(2∙tanθ)/(1-〖tan〗^2 θ)
Fomulas, Angulos medios
sen(θ/2)=±√((1-COSθ)/2)
cos(θ/2)=±√((1+cos θ)/2)
tan(θ/2)=
±√((1-cosθ)/(1+cosθ))
±(1-cos)/cosθ
±senθ/(1+cosθ)
Identidades Suma
senα∙senβ=1/2 [cos(α-β)-cos(α+β)]
cosα∙cosβ=1/2 [cos(α-β)+cos(α+β)]
senα∙cosβ=1/2 [sen(α+β)+sen(α-β)]
Identidades Suma-Producto
senα+senβ=2∙sen((α+β)/2)∙cos((a-β)/2)
cosα+cosβ=2∙cos((α+β)/2)∙cos((a-β)/2)
senα-senβ=2∙sen((α+β)/2)∙cos((a-β)/2)
cosα-cosβ=2∙sen((α+β)/2)∙cos((a-β)/2)
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