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тригонометрические выражения

Authored by Лилия Аристова

Mathematics

11th - 12th Grade

Used 18+ times

тригонометрические  выражения
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9 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Упростите выражение
1+sin2x-cos2x

1+cos2x
2sin2x

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Упростите выражение
2sin α ⋅cosα⋅ cos2α

0.5sin4α
sin4α

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Вычислите sin120⁰

√3/3
√3/2
√3
-√3/3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Упростите выражение
сos2x⋅ tg2x+sin2x ⋅ ctg2x

-1
2
0
1

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

вычислите
cosα⋅cos3α-sinα⋅sin2α

-cos 4α
cos 4α
sin4α
-sin2 α

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Упростите выражение
-sin(π+3α)cosα+cos3αcos(3π/2-α) 

sin2α
-sin2α
-sinα
cos2α

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Найдите  значение выражения
-sin(π+3α)cosα+cos3αcos(3π/2-α) при α=Π/6

√3/2
3/2
-√3/2
1/2

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