cExams.net
Test # 107


1.
The value of cos 20 + cos 40 +cos 60+ ......+ cos 160 + cos 180 is:

Login/Register to access massive collection of FREE questions and answers.
Login/Register

Quantitative Aptitude
Quiz Index
1300 questions in 130 tests. Each test contains 10 questions.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

Idiom of the Day

becoming on/to (someone)
to make someone look good
The red dress looked very becoming on my girlfriend.

Word of the Day

  • How Effective a Person Are You?
  • Myth about Allergies
  • Beauty Skin Care Tips
  • Latest Hair Colours
  • Teddy Day
  • Road Safety

  • Smallest Things in the World

    This legendary plant

    You know that green stuff you see floating on top of pods? Well, its called rootless duckweed, and its the smallest vascular plant on Earth (legendary plant!).


    Chourishi Systems