Transformações trigonométricas

Transformações trigonométricas

10th - 12th Grade

18 Qs

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Transformações trigonométricas

Transformações trigonométricas

Assessment

Quiz

Mathematics

10th - 12th Grade

Practice Problem

Hard

Created by

ANDERSON AIMI

Used 5+ times

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A função  h: RRh:\ R\longrightarrow R  é representada por  h(x)=2sen2x3sen x+1h\left(x\right)=2\cdot sen^2x-3\cdot sen\ x+1 . A quantidade de raízes da função  hh  , no intervalo  [0, 2π]\left[0,\ 2\pi\right] , é igual a

2

3

4

5

6

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Se  tg x=5tg\ x=\sqrt{5} , então  sen2xsen^2x  é igual a

 16\frac{1}{6}  

 15\frac{1}{5}  

 34\frac{\sqrt{3}}{4}  

 35\frac{3}{5}  

 56\frac{5}{6}  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A expressão  [cos(7π6)3sen(π6+π)]tg(5π4)\left[\cos\left(\frac{7\pi}{6}\right)-3\cdot sen\left(\frac{\pi}{6}+\pi\right)\right]\cdot tg\left(\frac{5\pi}{4}\right)   é igual a

332\frac{3-\sqrt{3}}{2}

3+32\frac{3+\sqrt{3}}{2}

332\frac{3\sqrt{3}}{2}

232\sqrt{3}

43-4\sqrt{3}

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A soma dos elementos do conjunto formado por todas as soluções, no intervalo  [0, 2π]\left[0,\ 2\pi\right] , da equação  2sen4x3sen2x+1=02sen^4x-3sen^2x+1=0  é igual a

3π3\pi

4π4\pi

5π5\pi

6π6\pi

7π7\pi

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sabendo que cosx = 4/5, qual é o valor de sen2x

2425\frac{24}{25}

2450\frac{24}{50}

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Se tg x = ¼, qual o valor da tg 2x

2 +1\sqrt{2\ }\ +1

815\frac{8}{15}

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

O valor do seno de 15° é:

624\frac{\sqrt{6}-\sqrt{2}}{4}

62\frac{\sqrt{6}}{2}

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