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)
4
√
1
2
(iii)
√
1
2
(iv)
1
2
(v)
√
3
2
Question
2
2.
cos
90°
=
(i)
(
−
1
)
(ii)
(
−
3
)
(iii)
3
(iv)
1
(v)
0
Question
3
3.
tan
60°
=
(i)
4
√
3
(ii)
3
(iii)
√
5
(iv)
√
1
3
(v)
√
3
Question
4
4.
cot
30°
=
(i)
3
(ii)
1
(iii)
4
√
3
(iv)
√
3
(v)
√
6
Question
5
5.
sec
60°
=
(i)
(
−
1
)
(ii)
1
(iii)
2
(iv)
3
(v)
5
Question
6
6.
cosec
45°
=
(i)
√
2
(ii)
2
(iii)
√
5
(iv)
4
√
2
(v)
√
-1
Question
7
7.
sin
0°
=
(i)
(
−
1
)
(ii)
0
(iii)
1
(iv)
3
(v)
(
−
2
)
Question
8
8.
cos
30°
=
(i)
1
2
4
√
3
(ii)
1
2
√
3
(iii)
3
2
(iv)
1
2
(v)
1
2
√
5
Question
9
9.
tan
45°
=
(i)
1
(ii)
0
(iii)
(
−
2
)
(iv)
2
(v)
4
Question
10
10.
cot
30°
=
(i)
4
√
3
(ii)
√
1
3
(iii)
3
(iv)
√
5
(v)
√
3
Question
11
11.
sec
30°
=
(i)
2
√
1
3
(ii)
2
√
-1
3
(iii)
2
4
√
1
3
(iv)
2
(v)
2
3
Question
12
12.
cosec
30°
=
(i)
3
(ii)
2
(iii)
(
−
1
)
(iv)
4
(v)
1
Assignment Key
1) (iii)
2) (v)
3) (v)
4) (iv)
5) (iii)
6) (i)
7) (ii)
8) (ii)
9) (i)
10) (v)
11) (i)
12) (ii)
