Решите простейшие тригонометрические уравнения: 6-8
е ее удалили спс
6 2sinxcosx/(-2sin²a)=0 -ctgx-0 x=π/2+πn,n∈z 7 cos(x+π/4)-1=0⇒cos(x+π/4)=1⇒x+π/4=2πn⇒x=-π/4+2πn,n∈z sin(x-π/4)-1=0⇒sin(x-π/4)=1⇒x-π/4=π/2+2πn⇒x=3π/4+2πn,n∈z 8 cos3x+1=0⇒cos3x=-1⇒3x=π+2πn⇒x=π/3+2πn/3,n∈z cosx/2=0⇒x/2=π/2+πn⇒x=π+2πn,n∈z