Помогите решить пожалуйста: 3(cos^2)*x-5cos*x-8=0;
8(cos^2)*x-14 sin*x+1=0
5(sin^2)*x-14sin*x*cos*x=8(cos^2)*x=0
2tg*x-9ctg*x+3=0
(sin^2)*x-5(cos^2)*x=2sin*2x
5cos*2x+5=8sin*2x-6(sin^2)*x
8(cos^2)*x-14 sin*x+1=0
5(sin^2)*x-14sin*x*cos*x=8(cos^2)*x=0
2tg*x-9ctg*x+3=0
(sin^2)*x-5(cos^2)*x=2sin*2x
5cos*2x+5=8sin*2x-6(sin^2)*x
8(cos^2)*x-14 sin*x+1=0
5(sin^2)*x-14sin*x*cos*x=8(cos^2)*x=0
2tg*x-9ctg*x+3=0
(sin^2)*x-5(cos^2)*x=2sin*2x
5cos*2x+5=8sin*2x-6(sin^2)*x
8(cos^2)*x-14 sin*x+1=0
5(sin^2)*x-14sin*x*cos*x=8(cos^2)*x=0
2tg*x-9ctg*x+3=0
(sin^2)*x-5(cos^2)*x=2sin*2x
5cos*2x+5=8sin*2x-6(sin^2)*x