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Math 10 Chapter 8 - Part A
1.
Trigonometry is the branch of the mathematics, which deals with sides and ____________ of a triangle.
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2.
In a right angled triangle, the side opposite to right angle is called ___________.
a) Hypotenuse
b) Base
c) Perpendicular
3.
Cosec θ = Hypotenuse
a) Perpendicular
b) Hypotenuse
c) Base
4.
tan θ = Pendicular
a) Base
b) Hypotenuse
c) Perpendicular
5.
Sin ___________ | θ = Cos θ
a) 45
o
b) 180
o
c) 270
o
d) 90
o
6.
Cos θ ( _________ ) = 1
a) Cot
q
b) Cos
q
c) Sec
q
d) Tan
q
7.
__________ tan θ = 1
a) Cot
q
b) Tan
q
c) Cos
q
d) Sec
q
8.
tan 60
o
= tan (90
o
| 30
o
) = Cot __________.
a) 45
o
b) 60
o
c) 30
o
d) 90
o
9.
Cos 45
o
= Cos (90
o
| 45
o
) = Sin __________.
a) 45
o
b) 25
o
c) 120
o
d) 90
o
10.
In right angled triangle ABC Cos Φ =__________
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a) 2/5
b) 3/5
c) 1/5
d) 4/5
11.
If in a right angle triangle ABC, the angle B is of 90
o
and C is an acute angle of 60
o
then Cosec 60
o
= ___________
a) a/b
b) b/a
c) c/a
d) b/c
12.
tan
2
θ + 1 = ____________
a) Coy
2
θ
b) Tan
2
θ
c) Cos
2
θ
d) Sec
2
θ
13.
In right angled triangle ABC tan θ _______
a) 5/12
b) 13/12
c) 5/13
d) 13/5
14.
tan θ = _________
a) Sin θ
b) Cosec θ
c) Cos θ
15.
Without using the calculator tan30
o
= ___________
a) 1/ θ2
b) 1/ θ3
c) 1/ θ4
d) 2/ θ3
16.
Without using the calculator 2 Sin 60
o
Cos 60
o
= ___________
a) θ 3/4
b) θ 1/2
c) θ 3/2
d) θ 2/3
17.
Without using the calculator 2 Sin 45
o
+ 2 Cos 45
o
= ______________
a) 2 θ 4
b) 2 θ 3
c) 2 θ 5
d) 2 θ 2
18.
In a right angled triangle ABC, m|B = 90
o
, m|A = 30
o
, then m|B = __________
a) 90
0
b) 50
0
c) 45
0
d) 60
0
19.
CosΦ/SinΦ = __________
a) Cot Φ
b) Cosec Φ
c) Tan Φ
20.
Sin θ/Cosecθ + Cos / Sec θ = ______________
a) 2
b) 1
c) 3
d) 1/2
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