Trigonometria Flashcards

1
Q

formula sen2x

A

sin(2x)=2sin(x)cos(x)

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2
Q

formula principal trigonometria

A

sin ^2(x)+cos ^2(x)=1

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3
Q

secante cossecante cotangente

A

cos sec = 1/(sin )

sec = 1/(cos )

co tan = cos/sen

lembrando que Sec nao é 1/sen e sim cos, é ao contrario

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4
Q

lei dos sen

A

Sen α = Cateto oposto a α
hipotenusa

Cos α = Cateto adjacente a α
hipotenusa

Tg α = Cateto oposto a α
Cateto adjacente a α

a = b = c
senα senβ senθ

onde tem COCA TEM GENTE

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5
Q

lei dos cos

A

a^2 = b^2 + c^2 – 2·b·c·cosα

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6
Q

pitagoras

A

hipotenusa ao quadrado igual a soma dos quadrados dos catetos

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7
Q

sen cos 30 45 60

A

1 2 3
3 2 1
tudo sobre 2 raiz em cada 1

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8
Q

Tg 30 45 60

A

√ 3/3 1 √ 3

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