The value of cos10 cos20 cos30 ……….cos1790 is equal to
a) 1/(2)1/2
b) -1/(2)1/2
c) 0
d) 2
The value of cos10 cos20 cos30 ……….cos1790 is equal to
a) 1/(2)1/2
b) -1/(2)1/2
c) 0
d) 2
pranshu aggarwal , 14 Years ago
Grade
Trigonometry> trigonometry ratio...
1 Answersvikas askiitian expert
cos1cos2cos3cos4....................cos90 .........cos179
cos90 = 0 so product of this series will become 0...
Approved Last Activity: 14 Years ago
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