Тригонометрия

Authored by Ксения Лобанова

Mathematics

1st - 12th Grade

Used 9+ times

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7 questions

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MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Выразить в радианах угол $\alpha=20\degree$

$\frac{\pi}{5}$

$\frac{\pi}{7}$

$\frac{\pi}{9}$

$\frac{\pi}{10}$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Выразить в градусах угол $\alpha=\frac{4\pi}{45}$

$16\degree$

$15\degree$

$20\degree$

$35\degree$

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Какой четверти числовой окружности принадлежит точка $\alpha=\frac{19\pi}{4}$

Первой

Второй

Третьей

Четвертой

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Упростить выражение: $3\cos^2\alpha-6+3\sin^2\alpha$

-5

-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Найти значение выражения $4\cos^2x+2$ , если $если\sin^2x=0,6$

4,56

3,6

4,6

8,4

DRAW QUESTION

3 mins • Ungraded

Отметьте $\frac{25\pi}{6}$

OPEN ENDED QUESTION

3 mins • Ungraded

Упростить выражение: $\frac{\cos2\alpha}{\cos\alpha-\sin\alpha}+\sin\left(\frac{3\pi}{2}+\alpha\right)$

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Тригонометрия

Выразить в радианах угол α=20°\alpha=20\degreeα=20°

Выразить в градусах угол α=4π45\alpha=\frac{4\pi}{45}α=454π​

Какой четверти числовой окружности принадлежит точка α=19π4\alpha=\frac{19\pi}{4}α=419π​

Упростить выражение: 3cos⁡2α−6+3sin⁡2α3\cos^2\alpha-6+3\sin^2\alpha3cos2α−6+3sin2α

Найти значение выражения 4cos⁡2x+24\cos^2x+24cos2x+2 , если еслиsin⁡2x=0,6если\sin^2x=0,6еслиsin2x=0,6

Отметьте 25π6\frac{25\pi}{6}625π​

Упростить выражение: cos⁡2αcos⁡α−sin⁡α+sin⁡(3π2+α)\frac{\cos2\alpha}{\cos\alpha-\sin\alpha}+\sin\left(\frac{3\pi}{2}+\alpha\right)cosα−sinαcos2α​+sin(23π​+α)

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Discover more resources for Mathematics

Выразить в радианах угол $\alpha=20\degree$

Выразить в градусах угол $\alpha=\frac{4\pi}{45}$

Какой четверти числовой окружности принадлежит точка $\alpha=\frac{19\pi}{4}$

Упростить выражение: $3\cos^2\alpha-6+3\sin^2\alpha$

Найти значение выражения $4\cos^2x+2$ , если $если\sin^2x=0,6$

Отметьте $\frac{25\pi}{6}$

Упростить выражение: $\frac{\cos2\alpha}{\cos\alpha-\sin\alpha}+\sin\left(\frac{3\pi}{2}+\alpha\right)$