Latest CDS Aptitude Question SOLUTION: What is the value of cos0 + cos1 +cos2 +............+cos180?

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What is the value of cos0 + cos1 +cos2 +............+cos180?

Asked In CDS jyotish r (11 years ago)

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chaitanya  (11 years ago)

now make the series twice

now add them as
cos0+cos1+--------------------+cos180
+ cos180+cos179+----------------+cos0
now the sum is treated as 2s
now the total is equal to zero
because cos 180 =0
=> 2s=0
=> s=0

therefore the sum of series cos0+-------------+cos180=0

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IQBAL MEHDI  (11 years ago)

0 ans.
since,s=n*(n+1)/2=cos180*(cos180+1)/2=-1*(-1+1)/2=0/2=0 ans.

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pritam sarkar  (9 years ago)

cos0=1; cos180=-1, similarly cos179=-cos1, cos178=-cos2;&so on
so the result will be 0

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