Question

Cos² 45° + 2 cos 60° + sin² 45° = ...
tolong yang bisa bantu jawab , terimakasih :)

Answer 1

(1/2 akar 2)^2 + 2.1/2 +(1/2 akar 2)^2 = 1/2+1+1/2 = 2

Answer 2

cos² 45° + 2 cos 60° + sin² 45° =
=  + 1 +
= 2