Question

Solve for
cosxcos(x+pi divided by 4)=0
0

Answer 1

Explanation:

hello : solutions in R

cosxcos((x+π)/4) =0

means : cosx = 0 or cos((x+π)/4) =0

1) cosx = 0 means : x = π/2+kπ k in Z

2) cos((x+π)/4) =0 means : (x+π)/4 = π/2+kπ .......continu calculate : x