EduSahara™ Assignment
Name : Trigonometry Diagram Problems
Chapter : Trigonometrical Ratios
Grade : ICSE Grade IX
License : Non Commercial Use
Question 1
1.
In the given figure, △EFG is right angled at F. If FG = 11 cm and ∠G = 30°, find EF and EG
  • (i)
      • 11

        3
        4


        3
        cm
      • &
      • 22

        3



        3
        cm
  • (ii)
      • 11

        3
        4


        3
        cm
      • &
      • 24
        cm
  • (iii)
      • 11

        3



        3
        cm
      • &
      • 22

        3



        3
        cm
  • (iv)
      • 11

        3
        4


        3
        cm
      • &
      • 22
        cm
  • (v)
      • 11

        3
        cm
      • &
      • 24
        cm
Question 2
2.
In the given figure, △FGH is right angled at G. If GH = 8 cm and ∠H = 45°, find FG and FH
  • (i)
      • 8
        cm
      • &
      • 8



        2
        cm
  • (ii)
      • 9
        cm
      • &
      • 16
        cm
  • (iii)
      • 9
        cm
      • &
      • 8



        2
        cm
  • (iv)
      • 6
        cm
      • &
      • 18
        cm
  • (v)
      • 9
        cm
      • &
      • 18
        cm
Question 3
3.
In the given figure, △EFG is right angled at F. If FG = 9 cm and ∠G = 60°, find EF and EG
  • (i)
      • 9
        4


        3
        cm
      • &
      • 17
        cm
  • (ii)
      • 9



        3
        cm
      • &
      • 18
        cm
  • (iii)
      • 9
        4


        3
        cm
      • &
      • 18
        cm
  • (iv)
      • 9
        4


        3
        cm
      • &
      • 20
        cm
  • (v)
      • 9
        4


        1

        3
        cm
      • &
      • 20
        cm
Question 4
4.
In the given figure, △FHG is right angled at G. If FG = 9 cm and ∠H = 30°, find FH
  • (i)
    20
    cm
  • (ii)
    19
    cm
  • (iii)
    18
    cm
  • (iv)
    17
    cm
  • (v)
    16
    cm
Question 5
5.
In the given figure, △HJI is right angled at I. If HI = 7 cm and ∠J = 30°, find IJ
  • (i)
    7
    cm
  • (ii)
    21

    2



    2
    cm
  • (iii)
    21
    cm
  • (iv)
    7



    18
    cm
  • (v)
    7



    3
    cm
Question 6
6.
In the given figure, △IKJ is right angled at J. If IJ = 7 cm and ∠K = 30°, find IL
  • (i)
    13

    4
    cm
  • (ii)
    4
    cm
  • (iii)
    7

    2
    cm
  • (iv)
    9

    2
    cm
  • (v)
    5

    2
    cm
Question 7
7.
In the given figure, △ACB is right angled at B. If AB = 9 cm and ∠C = 30°, find CD
  • (i)
    29

    2
    cm
  • (ii)
    25

    2
    cm
  • (iii)
    27

    4
    cm
  • (iv)
    27

    2
    cm
  • (v)
    27
    cm
Question 8
8.
In the given figure, △IKJ is right angled at J. If IJ = 13 cm and ∠K = 45°, find IK
  • (i)
    13

    2



    12
    cm
  • (ii)
    13



    2
    cm
  • (iii)
    26



    3
    cm
  • (iv)
    13
    cm
  • (v)
    26
    cm
Question 9
9.
In the given figure, △ACB is right angled at B. If AB = 15 cm and ∠C = 45°, find BC
  • (i)
    12
    cm
  • (ii)
    14
    cm
  • (iii)
    17
    cm
  • (iv)
    15
    cm
  • (v)
    16
    cm
Question 10
10.
In the given figure, △GIH is right angled at H. If GH = 16 cm and ∠I = 45°, find GJ
  • (i)
    8



    2
    cm
  • (ii)
    8
    cm
  • (iii)
    4



    12
    cm
  • (iv)
    16
    cm
  • (v)
    16



    3
    cm
Question 11
11.
In the given figure, △FHG is right angled at G. If FG = 15 cm and ∠H = 45°, find HI
  • (i)
    15



    3
    cm
  • (ii)
    15

    2
    cm
  • (iii)
    15
    cm
  • (iv)
    15

    2



    2
    cm
  • (v)
    15

    4



    12
    cm
Question 12
12.
In the given figure, △CED is right angled at D. If CD = 23 cm and ∠E = 60°, find CE
  • (i)
    46

    3



    18
    cm
  • (ii)
    23



    2
    cm
  • (iii)
    46

    3



    3
    cm
  • (iv)
    46

    3
    cm
  • (v)
    46
    cm
Question 13
13.
In the given figure, △GIH is right angled at H. If GH = 26 cm and ∠I = 60°, find HI
  • (i)
    26

    3



    3
    cm
  • (ii)
    13



    2
    cm
  • (iii)
    26

    3



    18
    cm
  • (iv)
    26
    cm
  • (v)
    26

    3
    cm
Question 14
14.
In the given figure, △DFE is right angled at E. If DE = 24 cm and ∠F = 60°, find DG
  • (i)
    12



    3
    cm
  • (ii)
    36
    cm
  • (iii)
    12



    18
    cm
  • (iv)
    18



    2
    cm
  • (v)
    12
    cm
Question 15
15.
In the given figure, △IKJ is right angled at J. If IJ = 26 cm and ∠K = 60°, find KL
  • (i)
    13
    cm
  • (ii)
    13

    2



    2
    cm
  • (iii)
    13

    3
    cm
  • (iv)
    13

    3



    3
    cm
  • (v)
    13

    3



    18
    cm
Question 16
16.
A chord of 13 cm subtends an angle of 90° at the centre. Calculate its shortest distance from the centre
  • (i)
    8.5 cm
  • (ii)
    7.5 cm
  • (iii)
    5.5 cm
  • (iv)
    4.5 cm
  • (v)
    6.5 cm
Question 17
17.
An equilateral triangle is inscribed in a circle of radius 9 cm. Find the length of its sides.
  • (i)
    27
    cm
  • (ii)
    9



    3
    cm
  • (iii)
    9



    18
    cm
  • (iv)
    27

    2



    2
    cm
  • (v)
    9
    cm
Question 18
18.
    • In the given figure, if
    •  
    • JL
    • KL
    • =
    • 2 cm
    • ,
    • and
    • JK = 8 cm
    • ,
    • find
    • sin
      J
  • (i)
    13

    17
  • (ii)
    1
  • (iii)
    15

    19
  • (iv)
    15

    17
Question 19
19.
    • In the given figure, if
    •  
    • EG
    • FG
    • =
    • 2 cm
    • ,
    • and
    • EF = 6 cm
    • ,
    • find
    • cos
      E
  • (i)
    3

    5
  • (ii)
    1

    5
  • (iii)
    3

    7
  • (iv)
    1
Question 20
20.
    • In the given figure, if
    •  
    • HJ
    • IJ
    • =
    • 2 cm
    • ,
    • and
    • HI = 10 cm
    • ,
    • find
    • tan
      H
  • (i)
    14

    5
  • (ii)
    12

    7
  • (iii)
    2
  • (iv)
    4
  • (v)
    12

    5
Question 21
21.
    • In the given figure, if
    •  
    • FH
    • +
    • GH
    • =
    • 32 cm
    • ,
    • and
    • FG = 8 cm
    • ,
    • find
    • sin
      F
  • (i)
    13

    17
  • (ii)
    1
  • (iii)
    15

    19
  • (iv)
    15

    17
Question 22
22.
    • In the given figure, if
    •  
    • DF
    • +
    • EF
    • =
    • 50 cm
    • ,
    • and
    • DE = 10 cm
    • ,
    • find
    • cos
      D
  • (i)
    1

    3
  • (ii)
    5

    13
  • (iii)
    3

    13
  • (iv)
    7

    13
  • (v)
    5

    11
Question 23
23.
    • In the given figure, if
    •  
    • BD
    • +
    • CD
    • =
    • 32 cm
    • ,
    • and
    • BC = 8 cm
    • ,
    • find
    • tan
      B
  • (i)
    15

    8
  • (ii)
    5

    2
  • (iii)
    17

    8
  • (iv)
    3

    2
  • (v)
    13

    8
Question 24
24.
    • The altitude
    • BE
    • of
    • △BCD
    • in which
    • ∠B
    • is obtuse is
    • 8 cm
    • .
    • If
    •  
    • CE = 8 cm
    • and
    • DE
    • =
    • 8



      3
      cm
    • ,
    • find
    • ∠CBD
  • (i)
    115°
  • (ii)
    105°
  • (iii)
    120°
  • (iv)
    100°
  • (v)
    110°
    Assignment Key

  •  1) (iii)
  •  2) (i)
  •  3) (ii)
  •  4) (iii)
  •  5) (v)
  •  6) (iii)
  •  7) (iv)
  •  8) (ii)
  •  9) (iv)
  •  10) (i)
  •  11) (iv)
  •  12) (iii)
  •  13) (i)
  •  14) (i)
  •  15) (iv)
  •  16) (v)
  •  17) (ii)
  •  18) (iv)
  •  19) (i)
  •  20) (v)
  •  21) (iv)
  •  22) (ii)
  •  23) (i)
  •  24) (ii)