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Trigonometry
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A#math#trigonometry#grade10-11
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Questions
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Answers
1
Find the domain of the function
𝒚 = cot(𝒙).
D = R\{π/2 + k2π | k ∈ Z }
D = R\{π + kπ | k ∉ Z }
D = R\{π/2 + kπ | k ∈ Z }
D = R\{kπ | k ∈ Z }
2
Which is "
Double angle formulae
"?
cos(2α) = 1 - 2cos2α
cos(2α) = sin2α - cos2α
sin(2α) = sinαcosα
tan(2α) = 2tanα/(1-tan2α)
3
Solve the equation: 6cos
2
𝒙 + 5sin𝒙-2 = 0
𝒙 = π/6 + k2π (k ∈ Z)
𝒙 = 7π/6 + k2π (k ∉ Z)
𝒙 = 7π/6 + k2π (k ∈ Z)
𝒙 = -π/6 + k2π (k ∈ Z)
4
Given
sin(
α
) = 3/5
such that
π/2 < α < π
. Find
cos(α)
-4/5
±4/5
4/5
16/25
5
Convert the measure of the arc
3π/4
to
degree
?
135
120
125
130
6
Which is Symmetric arcs
α
and
-α?
sin(-α) = -sinα
cot(-α) = -cotα
tan(-α) = -tanα
cos(-α) = cosα
7
What is the period of the function
sin(𝒙)
and
cos(𝒙)
?
Two Pi
Một Pi
Hai Pi
One Pi
8
How many underlying types of basic trigonometric equations?
four
4or
For
Fuor
9
What do we call this type of equation "asin𝒙 + bcos𝒙 = c"?
Linear equations for sin𝒙 and cos𝒙
Linear equation sin𝒙 and cos𝒙
Linear eqation for sin𝒙 and cos𝒙
Linear equation four sin𝒙 and cos𝒙
10
In what grade are
Trigonometric arcs and angles
taught?
Ten
0.10
Mười
0.10
11
Convert the measure of the angle
150
o
into
radian
2π/3
3π/4
5π/6
7π/8
12
Calculate the value of
tan(π/6)
1/√3
undefined
√3/3
√3
13
What is
main topic
today?
Trigonometry
Trigonometric equations
Trigonometric fuction
Triogonometric
14
How many
lessons of trigonometry
do you think are there in grade 10 and 11?
3
4
5
6
15
How many
trigonometric functions
taught in
grade 11
?
3
6
4
5
