Question

evaluate cos(41π/4)​

Answer 1

Ello user

cos(10π+ π/4)

cos(π/4)

1/2^1/2

Ans.

Hope this helps

Answer 2

Answer:

Cos(41π/4)

WE KNOW THAT "π" = 180°

= Cos(41×180/4)

= Cos(41×45)

= Cos(1845)

= -0.6