Worksheets18.2 Sine and Cosine Ratios
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
What are complementary angles?
a)
Angles that add up to 180°
b)
Angles that add up to 90°
c)
Angles that are equal to each other
d)
Angles that are opposite of each other when lines intersect.
2.
What is the complement to: cos 40⁰ = ?
a)
sin 50⁰
b)
cos 50⁰
c)
tan 50⁰
d)
sin 40⁰
3.
What is the complement to: sin 20⁰ = ?
a)
cos 70⁰
b)
sin 70⁰
c)
cos 20⁰
d)
tan 20⁰
4.
What is the complement to: cos 38⁰ = ?
a)
sin 62⁰
b)
sin 52⁰
c)
cos 52⁰
d)
sin 38⁰
5.
What is the complement to: sin 1⁰ = ?
a)
cos 89⁰
b)
cos 1⁰
c)
sin 89⁰
d)
tan 1⁰
6.
What is the complement angle to 12°?
a)
78°
b)
68°
c)
168°
d)
90°
7.
If sin(β) = ⅝ . What is cos(α)?
a)
⅜
b)
⅛
c)
⅝
d)
⅞
8.
What is the missing number?
sin(60) = cos( )
sin(60) = cos( )
a)
10
b)
20
c)
30
d)
40
9.
What is the missing number?
Sin( ) = Cos(80)
Sin( ) = Cos(80)
a)
5
b)
10
c)
15
d)
20
10.
What is the missing number?
Sin( ) = Cos (89)
Sin( ) = Cos (89)
a)
0
b)
1
c)
2
d)
3
100 %
