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The value of cos1 0 cos2 0 cos3 0 ……….cos179 0 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


Grade:

1 Answers

vikas askiitian expert
509 Points
10 years ago

cos1cos2cos3cos4....................cos90 .........cos179

cos90 = 0 so product of this series will become 0...

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