EduSahara™ Assignment
Name : Trigonometry Diagram Problems
Chapter : Trigonometrical Ratios
Grade : ICSE Grade IX
License : Non Commercial Use
Question
1
1.
In the given figure, △HIJ is right angled at I. If IJ = 12 cm and ∠J = 30°, find HI and HJ
(i)
4
4
√
3
cm
&
24
cm
(ii)
4
4
√
3
cm
&
27
cm
(iii)
4
4
√
1
3
cm
&
27
cm
(iv)
4
4
√
3
cm
&
8
√
3
cm
(v)
4
√
3
cm
&
8
√
3
cm
Question
2
2.
In the given figure, △JKL is right angled at K. If KL = 11 cm and ∠L = 45°, find JK and JL
(i)
12
cm
&
25
cm
(ii)
9
cm
&
25
cm
(iii)
11
cm
&
11
√
2
cm
(iv)
12
cm
&
11
√
2
cm
(v)
12
cm
&
22
cm
Question
3
3.
In the given figure, △ABC is right angled at B. If BC = 9 cm and ∠C = 60°, find AB and AC
(i)
9
√
3
cm
&
18
cm
(ii)
9
4
√
3
cm
&
17
cm
(iii)
9
4
√
3
cm
&
18
cm
(iv)
9
4
√
3
cm
&
19
cm
(v)
9
4
√
1
3
cm
&
19
cm
Question
4
4.
In the given figure, △EGF is right angled at F. If EF = 9 cm and ∠G = 30°, find EG
(i)
20
cm
(ii)
19
cm
(iii)
18
cm
(iv)
15
cm
(v)
17
cm
Question
5
5.
In the given figure, △HJI is right angled at I. If HI = 7 cm and ∠J = 30°, find IJ
(i)
21
cm
(ii)
7
cm
(iii)
21
2
√
2
cm
(iv)
7
√
3
cm
(v)
7
√
18
cm
Question
6
6.
In the given figure, △IKJ is right angled at J. If IJ = 9 cm and ∠K = 30°, find IL
(i)
5
cm
(ii)
17
4
cm
(iii)
9
2
cm
(iv)
7
2
cm
(v)
11
2
cm
Question
7
7.
In the given figure, △BDC is right angled at C. If BC = 8 cm and ∠D = 30°, find DE
(i)
9
cm
(ii)
13
cm
(iii)
11
cm
(iv)
12
cm
(v)
15
cm
Question
8
8.
In the given figure, △HJI is right angled at I. If HI = 12 cm and ∠J = 45°, find HJ
(i)
12
cm
(ii)
24
√
3
cm
(iii)
6
√
12
cm
(iv)
12
√
2
cm
(v)
24
cm
Question
9
9.
In the given figure, △CED is right angled at D. If CD = 13 cm and ∠E = 45°, find DE
(i)
13
cm
(ii)
12
cm
(iii)
16
cm
(iv)
14
cm
(v)
11
cm
Question
10
10.
In the given figure, △EGF is right angled at F. If EF = 12 cm and ∠G = 45°, find EH
(i)
12
cm
(ii)
12
√
3
cm
(iii)
3
√
12
cm
(iv)
6
√
2
cm
(v)
6
cm
Question
11
11.
In the given figure, △GIH is right angled at H. If GH = 15 cm and ∠I = 45°, find IJ
(i)
15
2
√
2
cm
(ii)
15
√
3
cm
(iii)
15
4
√
12
cm
(iv)
15
2
cm
(v)
15
cm
Question
12
12.
In the given figure, △IKJ is right angled at J. If IJ = 22 cm and ∠K = 60°, find IK
(i)
44
3
√
18
cm
(ii)
44
cm
(iii)
44
3
cm
(iv)
22
√
2
cm
(v)
44
3
√
3
cm
Question
13
13.
In the given figure, △ACB is right angled at B. If AB = 26 cm and ∠C = 60°, find BC
(i)
26
cm
(ii)
26
3
cm
(iii)
13
√
2
cm
(iv)
26
3
√
3
cm
(v)
26
3
√
18
cm
Question
14
14.
In the given figure, △CED is right angled at D. If CD = 21 cm and ∠E = 60°, find CF
(i)
21
2
√
3
cm
(ii)
63
2
cm
(iii)
21
2
√
18
cm
(iv)
21
2
cm
(v)
63
4
√
2
cm
Question
15
15.
In the given figure, △BDC is right angled at C. If BC = 22 cm and ∠D = 60°, find DE
(i)
11
cm
(ii)
11
3
cm
(iii)
11
3
√
18
cm
(iv)
11
2
√
2
cm
(v)
11
3
√
3
cm
Question
16
16.
A chord of 16 cm subtends an angle of 90° at the centre. Calculate its shortest distance from the centre
(i)
6.0 cm
(ii)
8.0 cm
(iii)
10.0 cm
(iv)
9.0 cm
(v)
7.0 cm
Question
17
17.
An equilateral triangle is inscribed in a circle of radius 12 cm. Find the length of its sides.
(i)
36
cm
(ii)
12
cm
(iii)
12
√
3
cm
(iv)
18
√
2
cm
(v)
12
√
18
cm
Question
18
18.
In the given figure, if
CE
−
DE
=
2 cm
,
and
CD = 8 cm
,
find
sin
C
(i)
1
(ii)
15
19
(iii)
13
17
(iv)
15
17
Question
19
19.
In the given figure, if
CE
−
DE
=
2 cm
,
and
CD = 10 cm
,
find
cos
C
(i)
5
11
(ii)
1
3
(iii)
3
13
(iv)
7
13
(v)
5
13
Question
20
20.
In the given figure, if
JL
−
KL
=
2 cm
,
and
JK = 8 cm
,
find
tan
J
(i)
3
2
(ii)
5
2
(iii)
17
8
(iv)
15
8
(v)
13
8
Question
21
21.
In the given figure, if
DF
+
EF
=
18 cm
,
and
DE = 6 cm
,
find
sin
D
(i)
6
5
(ii)
4
5
(iii)
4
7
(iv)
2
5
(v)
4
3
Question
22
22.
In the given figure, if
BD
+
CD
=
50 cm
,
and
BC = 10 cm
,
find
cos
B
(i)
5
13
(ii)
5
11
(iii)
3
13
(iv)
1
3
(v)
7
13
Question
23
23.
In the given figure, if
BD
+
CD
=
32 cm
,
and
BC = 8 cm
,
find
tan
B
(i)
5
2
(ii)
15
8
(iii)
17
8
(iv)
13
8
(v)
3
2
Question
24
24.
The altitude
FI
of
△FGH
in which
∠F
is obtuse is
7 cm
.
If
GI = 7 cm
and
HI
=
7
√
3
cm
,
find
∠GFH
(i)
120°
(ii)
100°
(iii)
115°
(iv)
105°
(v)
110°
Assignment Key
1) (v)
2) (iii)
3) (i)
4) (iii)
5) (iv)
6) (iii)
7) (iv)
8) (iv)
9) (i)
10) (iv)
11) (i)
12) (v)
13) (iv)
14) (i)
15) (v)
16) (ii)
17) (iii)
18) (iv)
19) (v)
20) (iv)
21) (ii)
22) (i)
23) (ii)
24) (iv)