
Toán 11 giữa kì
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11th Grade
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69 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giá trị của sin ( 13π / 6 ) bằng :
1/2
-1/2
√3 / 2
-√3 / 2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chọn khẳng định đúng ?
tan ( π - α ) = tan α
sin ( π - α ) = sin α
Cot ( π - α ) = cot α
cos ( π - α ) = cos α
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho α thuộc góc phần lV của đường tròn lượng giác . Khẳng định nào dưới đây đúng ?
Sin α < 0 ; cos α > 0
Sin α > 0 ; cos α > 0
Sin α > 0 ; cos α < 0
Sin α < 0 ; cos α < 0
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho α thuộc góc phần tư thứ lll của đường tròn lượng giác . Khẳng định nào dưới đây đúng :
Sin α > 0 ; cos α > 0
Sin α > 0 ; cos α < 0
Sin α < 0 ; cos α < 0
Sin α < 0 ; cos α > 0
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trên đường tròn lượng giác , cho điểm M (x,y) và sđ ( OA , OM ) = α . Khẳng định nào dưới đây đúng ?
Sin α = y
Sin α = x - y
Cos α = y
Cos α = x + y
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