EduSahara™ Assignment
Name : Standard Trigonometric Ratios
Chapter : Trigonometrical Identities
Grade : ICSE Grade X
License : Non Commercial Use
Question
1
1.
sin
45°
=
(i)
√
1
2
(ii)
1
2
(iii)
√
3
2
(iv)
4
√
1
2
(v)
√
-1
2
Question
2
2.
cos
0°
=
(i)
(
−
1
)
(ii)
4
(iii)
0
(iv)
2
(v)
1
Question
3
3.
tan
30°
=
(i)
√
-1
3
(ii)
1
3
(iii)
4
√
1
3
(iv)
√
1
3
(v)
1
Question
4
4.
cot
45°
=
(i)
1
(ii)
(
−
2
)
(iii)
4
(iv)
2
(v)
0
Question
5
5.
sec
45°
=
(i)
4
√
2
(ii)
√
4
(iii)
√
2
(iv)
2
(v)
√
1
2
Question
6
6.
cosec
60°
=
(i)
2
√
1
3
(ii)
2
4
√
1
3
(iii)
2
(iv)
2
√
-1
3
(v)
2
3
Question
7
7.
sin
60°
=
(i)
1
2
√
5
(ii)
1
2
4
√
3
(iii)
1
2
√
1
3
(iv)
3
2
(v)
1
2
√
3
Question
8
8.
cos
0°
=
(i)
2
(ii)
(
−
2
)
(iii)
1
(iv)
0
(v)
4
Question
9
9.
tan
30°
=
(i)
1
3
(ii)
4
√
1
3
(iii)
1
(iv)
√
1
3
(v)
√
-1
3
Question
10
10.
cot
30°
=
(i)
3
(ii)
√
1
3
(iii)
√
5
(iv)
√
3
(v)
4
√
3
Question
11
11.
sec
30°
=
(i)
2
√
-1
3
(ii)
2
(iii)
2
3
(iv)
2
4
√
1
3
(v)
2
√
1
3
Question
12
12.
cosec
30°
=
(i)
2
(ii)
0
(iii)
1
(iv)
4
(v)
3
Assignment Key
1) (i)
2) (v)
3) (iv)
4) (i)
5) (iii)
6) (i)
7) (v)
8) (iii)
9) (iv)
10) (iv)
11) (v)
12) (i)
