Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • The value of cos 1° cos 2° cos 3°… cos 179° is A. 1/√2 B. 0 C. 1 D. –1

The value of \cos 1 ^{\circ} \cos 2 ^{\circ} \cos 3 ^{\circ} \ldots \cos 179 ^{\circ} \: \: is\\\\

A. 1/ \sqrt 2\\\\

B. 0

C. 1

D. -1

Answers (1)

The answer is the option (b).

    \\ \cos 1^{0}~\cos2^{0} \ldots \ldots \ldots \ldots \ldots .\cos179^{0} \\\\ = \cos1^{0}~\cos2^{0} \ldots \ldots \ldots \ldots \ldots .\cos 90^{0} \ldots \ldots .\cos179^{0} \] =0 \left( as~~\cos 90^{0}=0 \right) \\\\

 

Posted by

infoexpert21

View full answer

Similar Questions

Latest Question