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bảng tínhTRIGONOMETRY &QUADRATIC EQUATIONS
Total câu hỏi: 20
Worksheet time: 38mins
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Lớp học
Ngày
1.
The solutions of the quadratic equation
x2-5x+6=0 are
x2-5x+6=0 are
a)
x=1 or x=-6
b)
x=3 or x=2
c)
x=-3 or x= 2
d)
x=-1 or x=6
2.
In the quadratic formula, if b2-4ac>0, then the quadratic equation has
a)
two imaginary solutions
b)
two different real solutions
c)
two equal real solutions
d)
none of these
3.
In the quadratic formula, the expression
b2-4ac is called
b2-4ac is called
a)
discrim
b)
determinant
c)
discriminant
d)
none of these
4.
The solution of the quadratic equation
4x2-5x-9=0 are
4x2-5x-9=0 are
a)
x=-1 or x=9/4
b)
x=1 or x=9/4
c)
x=2 or x=3
d)
x=-2 or x=-3
5.
One solution of the quadratic equation
x2-7x+12=0 is
x2-7x+12=0 is
a)
x=3
b)
x=2
c)
x=-3
d)
x=-2
6.
What is the length of the hypotenuse?
a)
16
b)
30
c)
34
7.
What is the ratio for Sine?
a)
Hyp/Opp
b)
Opp/Hyp
c)
Opp/Adj
d)
Adj/Opp
8.
What is the ratio for Tangent
a)
Opp/Adj
b)
Adj/Opp
c)
Opp/Hyp
d)
Hyp/Opp
9.
What is the correct ratio?
a)
7/24
b)
24/7
c)
7/25
d)
24/25
10.
3x2 - 4 is a quadratic
a)
true
b)
false
11.
Determine the values of
a, b, and c for
the quadratic equation:
4x2 – 8x = 3
a, b, and c for
the quadratic equation:
4x2 – 8x = 3
a)
a = 4, b = -8, c = 3
b)
a = 4, b =-8, c =-3
c)
a = 4, b = 8, c = 3
d)
a = 4, b = 8, c = -3
12.
How many solutions can a quadratic have?
a)
1 solution
b)
3 solutions
c)
0 solutions
d)
2 solutions
13.
What is the quadratic formula?
a)
b)
c)
d)
14.
What type of triangle is the context of our study of trigonometry?
a)
right triangle
b)
isosceles triangle
c)
scalene triangle
d)
acute triangle
15.
What is tan 45⁰?
a)
1
b)
2
c)
0.5
d)
0.75
16.
In right triangle ABC, ∠A and ∠B are complementary angles. The value of cos A = 5/13. What is the value of sin B?
a)
5/13
b)
12/13
c)
13/12
d)
13/5
17.
Reciprocal of cos A
a)
sinA
b)
cosec A
c)
cot A
d)
secA
18.
sec2 A -tan2 A
a)
1
b)
2
c)
9
d)
none of these
19.
cos45o
a)
21
b)
2
c)
1
d)
21
20.
cot 300
a)
1
b)
31
c)
3
d)
2
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