Math, asked by Vijaya123, 1 year ago

Cos(9pi/4) answer these please

Answers

Answered by siddhartharao77
1
Given, cos(9pi/4) can be written as

           = cos(2pi + pi/4)

           = cos(pi/4)

          = 1/root 2

         = 0.7071


Hope this helps!
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