
тригонометрические выражения
Authored by Лилия Аристова
Mathematics
11th - 12th Grade
Used 18+ times

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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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